10511656660 has 12 divisors (see below), whose sum is σ = 22074479028. Its totient is φ = 4204662656.

The previous prime is 10511656609. The next prime is 10511656679. The reversal of 10511656660 is 6665611501.

It can be written as a sum of positive squares in 2 ways, for example, as 7812438544 + 2699218116 = 88388^2 + 51954^2 .

It is a super-2 number, since 2×10511656660² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262791397 + ... + 262791436.

It is an arithmetic number, because the mean of its divisors is an integer number (1839539919).

Almost surely, 2^10511656660 is an apocalyptic number.

10511656660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10511656660 is an abundant number, since it is smaller than the sum of its proper divisors (11562822368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10511656660 is a wasteful number, since it uses less digits than its factorization.

10511656660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525582842 (or 525582840 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 10511656660 in words is "ten billion, five hundred eleven million, six hundred fifty-six thousand, six hundred sixty".