10561818807 has 12 divisors (see below), whose sum is σ = 15439768344. Its totient is φ = 6956378160.

The previous prime is 10561818797. The next prime is 10561818833. The reversal of 10561818807 is 70881816501.

10561818807 is a `hidden beast` number, since 1 + 0 + 561 + 8 + 1 + 8 + 80 + 7 = 666.

It is not a de Polignac number, because 10561818807 - 2⁸ = 10561818551 is a prime.

It is a super-2 number, since 2×10561818807² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10561818877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7068744 + ... + 7070237.

It is an arithmetic number, because the mean of its divisors is an integer number (1286647362).

Almost surely, 2^10561818807 is an apocalyptic number.

10561818807 is a deficient number, since it is larger than the sum of its proper divisors (4877949537).

10561818807 is a wasteful number, since it uses less digits than its factorization.

10561818807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14139070 (or 14139067 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 45.

The spelling of 10561818807 in words is "ten billion, five hundred sixty-one million, eight hundred eighteen thousand, eight hundred seven".