56442601615537 has 4 divisors (see below), whose sum is σ = 59413264858480. Its totient is φ = 53471938372596.

The previous prime is 56442601615481. The next prime is 56442601615541. The reversal of 56442601615537 is 73551610624465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56442601615537 - 2¹⁵ = 56442601582769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56442601615567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1485331621443 + ... + 1485331621480.

It is an arithmetic number, because the mean of its divisors is an integer number (14853316214620).

Almost surely, 2^{56442601615537} is an apocalyptic number.

It is an amenable number.

56442601615537 is a deficient number, since it is larger than the sum of its proper divisors (2970663242943).

56442601615537 is a wasteful number, since it uses less digits than its factorization.

56442601615537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970663242942.

The product of its (nonzero) digits is 18144000, while the sum is 55.

The spelling of 56442601615537 in words is "fifty-six trillion, four hundred forty-two billion, six hundred one million, six hundred fifteen thousand, five hundred thirty-seven".