10056510561 has 4 divisors (see below), whose sum is σ = 13408680752. Its totient is φ = 6704340372.

The previous prime is 10056510557. The next prime is 10056510613. The reversal of 10056510561 is 16501565001.

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 not a de Polignac number, because 10056510561 - 2² = 10056510557 is a prime.

It is a super-2 number, since 2×10056510561² (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 (10056510461) 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, 1676085091 + ... + 1676085096.

It is an arithmetic number, because the mean of its divisors is an integer number (3352170188).

Almost surely, 2^10056510561 is an apocalyptic number.

It is an amenable number.

10056510561 is a deficient number, since it is larger than the sum of its proper divisors (3352170191).

10056510561 is an equidigital number, since it uses as much as digits as its factorization.

10056510561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3352170190.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 10056510561 in words is "ten billion, fifty-six million, five hundred ten thousand, five hundred sixty-one".