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10190896681 = 71455842383
BaseRepresentation
bin10010111110110110…
…01011111000101001
3222022012222012010211
421133123023320221
5131332332143211
64403122141121
7510353123020
oct113733137051
928265865124
1010190896681
11435a54a569
121b84ab17a1
13c654080a4
146c96558b7
153e9a19e21
hex25f6cbe29

10190896681 has 4 divisors (see below), whose sum is σ = 11646739072. Its totient is φ = 8735054292.

The previous prime is 10190896679. The next prime is 10190896697. The reversal of 10190896681 is 18669809101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18669809101 = 43434181607.

It is a cyclic number.

It is not a de Polignac number, because 10190896681 - 21 = 10190896679 is a prime.

It is a super-2 number, since 2×101908966812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10190890681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727921185 + ... + 727921198.

It is an arithmetic number, because the mean of its divisors is an integer number (2911684768).

Almost surely, 210190896681 is an apocalyptic number.

It is an amenable number.

10190896681 is a deficient number, since it is larger than the sum of its proper divisors (1455842391).

10190896681 is an equidigital number, since it uses as much as digits as its factorization.

10190896681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455842390.

The product of its (nonzero) digits is 186624, while the sum is 49.

The spelling of 10190896681 in words is "ten billion, one hundred ninety million, eight hundred ninety-six thousand, six hundred eighty-one".

Divisors: 1 7 1455842383 10190896681