56894804421587 has 16 divisors (see below), whose sum is σ = 63441474220800. Its totient is φ = 50583479637600.

The previous prime is 56894804421583. The next prime is 56894804421671. The reversal of 56894804421587 is 78512440849865.

It is a cyclic number.

It is not a de Polignac number, because 56894804421587 - 2² = 56894804421583 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56894804421587.

It is not an unprimeable number, because it can be changed into a prime (56894804421583) 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, 156715337 + ... + 157077962.

It is an arithmetic number, because the mean of its divisors is an integer number (3965092138800).

Almost surely, 2^{56894804421587} is an apocalyptic number.

56894804421587 is a deficient number, since it is larger than the sum of its proper divisors (6546669799213).

56894804421587 is a wasteful number, since it uses less digits than its factorization.

56894804421587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313793674.

The product of its (nonzero) digits is 619315200, while the sum is 71.

The spelling of 56894804421587 in words is "fifty-six trillion, eight hundred ninety-four billion, eight hundred four million, four hundred twenty-one thousand, five hundred eighty-seven".