56877721320218 has 64 divisors (see below), whose sum is σ = 95254731952128. Its totient is φ = 25351320840960.

The previous prime is 56877721320131. The next prime is 56877721320239. The reversal of 56877721320218 is 81202312777865.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6322421 + ... + 12398727.

It is an arithmetic number, because the mean of its divisors is an integer number (1488355186752).

Almost surely, 2^{56877721320218} is an apocalyptic number.

56877721320218 is a deficient number, since it is larger than the sum of its proper divisors (38377010631910).

56877721320218 is a wasteful number, since it uses less digits than its factorization.

56877721320218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6076547.

The product of its (nonzero) digits is 15805440, while the sum is 59.

The spelling of 56877721320218 in words is "fifty-six trillion, eight hundred seventy-seven billion, seven hundred twenty-one million, three hundred twenty thousand, two hundred eighteen".