56587388378565 has 192 divisors, whose sum is σ = 104194089732096. Its totient is φ = 26174945280000.

The previous prime is 56587388378533. The next prime is 56587388378569.

56587388378565 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56587388378565 - 2⁵ = 56587388378533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56587388378569) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1324062877 + ... + 1324105613.

It is an arithmetic number, because the mean of its divisors is an integer number (542677550688).

Almost surely, 2^{56587388378565} is an apocalyptic number.

56587388378565 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56587388378565 is a deficient number, since it is larger than the sum of its proper divisors (47606701353531).

56587388378565 is a wasteful number, since it uses less digits than its factorization.

56587388378565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43132 (or 43121 counting only the distinct ones).

The product of its digits is 40642560000, while the sum is 84.

The spelling of 56587388378565 in words is "fifty-six trillion, five hundred eighty-seven billion, three hundred eighty-eight million, three hundred seventy-eight thousand, five hundred sixty-five".