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10197162361 = 1009812
BaseRepresentation
bin10010111111100110…
…00101100101111001
3222022122202112001001
421133303011211321
5131340433143421
64403504325001
7510460310221
oct113763054571
928278675031
1010197162361
11436303a011
121b87013761
13c667bcca9
146ca407081
153ea356691
hex25fcc5979

10197162361 has 3 divisors (see below), whose sum is σ = 10197263343. Its totient is φ = 10197061380.

The previous prime is 10197162341. The next prime is 10197162379. The reversal of 10197162361 is 16326179101.

It is a happy number.

The square root of 10197162361 is 100981.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16326179101 = 24733660097.

It can be written as a sum of positive squares in only one way, i.e., 72777961 + 10124384400 = 8531^2 + 100620^2 .

It is not a de Polignac number, because 10197162361 - 25 = 10197162329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10197162361.

It is not an unprimeable number, because it can be changed into a prime (10197162331) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 50491 + ... + 151471.

It is an arithmetic number, because the mean of its divisors is an integer number (3399087781).

Almost surely, 210197162361 is an apocalyptic number.

10197162361 is the 100981-st square number.

10197162361 is the 50491-st centered octagonal number.

It is an amenable number.

10197162361 is a deficient number, since it is larger than the sum of its proper divisors (100982).

10197162361 is an frugal number, since it uses more digits than its factorization.

10197162361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201962 (or 100981 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 10197162361 in words is "ten billion, one hundred ninety-seven million, one hundred sixty-two thousand, three hundred sixty-one".

Divisors: 1 100981 10197162361