10556511015556 has 48 divisors (see below), whose sum is σ = 21235756368960. Its totient is φ = 4541212753920.

The previous prime is 10556511015541. The next prime is 10556511015619. The reversal of 10556511015556 is 65551011565501.

It is a happy number.

It is a super-2 number, since 2×10556511015556² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5645565 + ... + 7279108.

It is an arithmetic number, because the mean of its divisors is an integer number (442411591020).

Almost surely, 2^{10556511015556} is an apocalyptic number.

It is an amenable number.

10556511015556 is an abundant number, since it is smaller than the sum of its proper divisors (10679245353404).

10556511015556 is a wasteful number, since it uses less digits than its factorization.

10556511015556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12925684 (or 12925682 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 46.

Subtracting 10556511015556 from its reverse (65551011565501), we obtain a palindrome (54994500549945).

The spelling of 10556511015556 in words is "ten trillion, five hundred fifty-six billion, five hundred eleven million, fifteen thousand, five hundred fifty-six".