56856503487 has 16 divisors (see below), whose sum is σ = 86643067392. Its totient is φ = 32487710880.

The previous prime is 56856503461. The next prime is 56856503563. The reversal of 56856503487 is 78430565865.

It is not a de Polignac number, because 56856503487 - 2¹¹ = 56856501439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56856503087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409753 + ... + 530669.

It is an arithmetic number, because the mean of its divisors is an integer number (5415191712).

Almost surely, 2^56856503487 is an apocalyptic number.

56856503487 is a deficient number, since it is larger than the sum of its proper divisors (29786563905).

56856503487 is a wasteful number, since it uses less digits than its factorization.

56856503487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143318.

The product of its (nonzero) digits is 24192000, while the sum is 57.

The spelling of 56856503487 in words is "fifty-six billion, eight hundred fifty-six million, five hundred three thousand, four hundred eighty-seven".