56612661898 has 8 divisors (see below), whose sum is σ = 91451223108. Its totient is φ = 26128920864.

The previous prime is 56612661841. The next prime is 56612661913. The reversal of 56612661898 is 89816621665.

It can be written as a sum of positive squares in 2 ways, for example, as 52714782409 + 3897879489 = 229597^2 + 62433^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1088705011 + ... + 1088705062.

Almost surely, 2^56612661898 is an apocalyptic number.

56612661898 is a deficient number, since it is larger than the sum of its proper divisors (34838561210).

56612661898 is a wasteful number, since it uses less digits than its factorization.

56612661898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177410088.

The product of its digits is 7464960, while the sum is 58.

The spelling of 56612661898 in words is "fifty-six billion, six hundred twelve million, six hundred sixty-one thousand, eight hundred ninety-eight".