56505157155006 has 16 divisors (see below), whose sum is σ = 129154644925824. Its totient is φ = 16144330615704.

The previous prime is 56505157154977. The next prime is 56505157155011. The reversal of 56505157155006 is 60055175150565.

It is a super-2 number, since 2×56505157155006² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56505157155006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672680442280 + ... + 672680442363.

It is an arithmetic number, because the mean of its divisors is an integer number (8072165307864).

Almost surely, 2^{56505157155006} is an apocalyptic number.

56505157155006 is an abundant number, since it is smaller than the sum of its proper divisors (72649487770818).

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

56505157155006 is a wasteful number, since it uses less digits than its factorization.

56505157155006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345360884655.

The product of its (nonzero) digits is 3937500, while the sum is 51.

The spelling of 56505157155006 in words is "fifty-six trillion, five hundred five billion, one hundred fifty-seven million, one hundred fifty-five thousand, six".