56565315443621 has 8 divisors (see below), whose sum is σ = 59633178811584. Its totient is φ = 53548160561280.

The previous prime is 56565315443617. The next prime is 56565315443629. The reversal of 56565315443621 is 12634451356565.

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

It is a cyclic number.

It is not a de Polignac number, because 56565315443621 - 2² = 56565315443617 is a prime.

It is a super-2 number, since 2×56565315443621² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56565315443629) 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, 12677119115 + ... + 12677123576.

It is an arithmetic number, because the mean of its divisors is an integer number (7454147351448).

Almost surely, 2^{56565315443621} is an apocalyptic number.

It is an amenable number.

56565315443621 is a deficient number, since it is larger than the sum of its proper divisors (3067863367963).

56565315443621 is a wasteful number, since it uses less digits than its factorization.

56565315443621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25354242811.

The product of its digits is 38880000, while the sum is 56.

The spelling of 56565315443621 in words is "fifty-six trillion, five hundred sixty-five billion, three hundred fifteen million, four hundred forty-three thousand, six hundred twenty-one".