56155061611660 has 24 divisors (see below), whose sum is σ = 128646141147216. Its totient is φ = 20420022404160.

The previous prime is 56155061611651. The next prime is 56155061611667. The reversal of 56155061611660 is 6611616055165.

It is not an unprimeable number, because it can be changed into a prime (56155061611667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127625139807 + ... + 127625140246.

It is an arithmetic number, because the mean of its divisors is an integer number (5360255881134).

Almost surely, 2^{56155061611660} is an apocalyptic number.

It is an amenable number.

56155061611660 is an abundant number, since it is smaller than the sum of its proper divisors (72491079535556).

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

56155061611660 is a wasteful number, since it uses less digits than its factorization.

56155061611660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255250280073 (or 255250280071 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 56155061611660 in words is "fifty-six trillion, one hundred fifty-five billion, sixty-one million, six hundred eleven thousand, six hundred sixty".