56021616537 has 8 divisors (see below), whose sum is σ = 75153743904. Its totient is φ = 37118616768.

The previous prime is 56021616523. The next prime is 56021616593. The reversal of 56021616537 is 73561612065.

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

It is not a de Polignac number, because 56021616537 - 2⁶ = 56021616473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56021616037) 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, 57281328 + ... + 57282305.

It is an arithmetic number, because the mean of its divisors is an integer number (9394217988).

Almost surely, 2^56021616537 is an apocalyptic number.

It is an amenable number.

56021616537 is a deficient number, since it is larger than the sum of its proper divisors (19132127367).

56021616537 is a wasteful number, since it uses less digits than its factorization.

56021616537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114563799.

The product of its (nonzero) digits is 226800, while the sum is 42.

The spelling of 56021616537 in words is "fifty-six billion, twenty-one million, six hundred sixteen thousand, five hundred thirty-seven".