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10207459081 = 28873535663
BaseRepresentation
bin10011000000110100…
…10111011100001001
3222100101010122111001
421200122113130021
5131401102142311
64404513135001
7510643653631
oct114032273411
928311118431
1010207459081
1143689320a6
121b8a55a461
13c68986921
146cb9276c1
153eb1dc4c1
hex260697709

10207459081 has 4 divisors (see below), whose sum is σ = 10210997632. Its totient is φ = 10203920532.

The previous prime is 10207459043. The next prime is 10207459099. The reversal of 10207459081 is 18095470201.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10207459081 is a prime.

It is a super-2 number, since 2×102074590812 (a number of 21 digits) contains 22 as substring.

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 10207459081.

It is not an unprimeable number, because it can be changed into a prime (10207459681) 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, 1764945 + ... + 1770718.

It is an arithmetic number, because the mean of its divisors is an integer number (2552749408).

Almost surely, 210207459081 is an apocalyptic number.

It is an amenable number.

10207459081 is a deficient number, since it is larger than the sum of its proper divisors (3538551).

10207459081 is an equidigital number, since it uses as much as digits as its factorization.

10207459081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3538550.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 10207459081 in words is "ten billion, two hundred seven million, four hundred fifty-nine thousand, eighty-one".

Divisors: 1 2887 3535663 10207459081