56931449387 has 8 divisors (see below), whose sum is σ = 59941376400. Its totient is φ = 53922875904.

The previous prime is 56931449381. The next prime is 56931449401. The reversal of 56931449387 is 78394413965.

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 56931449387 - 2⁴ = 56931449371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56931449381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251462 + ... + 420827.

It is an arithmetic number, because the mean of its divisors is an integer number (7492672050).

Almost surely, 2^56931449387 is an apocalyptic number.

56931449387 is a deficient number, since it is larger than the sum of its proper divisors (3009927013).

56931449387 is a wasteful number, since it uses less digits than its factorization.

56931449387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676765.

The product of its digits is 19595520, while the sum is 59.

The spelling of 56931449387 in words is "fifty-six billion, nine hundred thirty-one million, four hundred forty-nine thousand, three hundred eighty-seven".