56556556510000 has 50 divisors (see below), whose sum is σ = 136929078990572. Its totient is φ = 22622622600000.

The previous prime is 56556556509989. The next prime is 56556556510007. The reversal of 56556556510000 is 1565565565.

It is a tau number, because it is divible by the number of its divisors (50).

It is not an unprimeable number, because it can be changed into a prime (56556556510007) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2827817826 + ... + 2827837825.

Almost surely, 2^{56556556510000} is an apocalyptic number.

56556556510000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56556556510000 is an abundant number, since it is smaller than the sum of its proper divisors (80372522480572).

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

56556556510000 is an equidigital number, since it uses as much as digits as its factorization.

56556556510000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5655655679 (or 5655655658 counting only the distinct ones).

The product of its (nonzero) digits is 3375000, while the sum is 49.

It can be divided in two parts, 565565565 and 10000, that added together give a palindrome (565575565).

The spelling of 56556556510000 in words is "fifty-six trillion, five hundred fifty-six billion, five hundred fifty-six million, five hundred ten thousand".