56377405387 has 2 divisors, whose sum is σ = 56377405388. Its totient is φ = 56377405386.

The previous prime is 56377405379. The next prime is 56377405481. The reversal of 56377405387 is 78350477365.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56377405387 - 2³ = 56377405379 is a prime.

It is not a weakly prime, because it can be changed into another prime (56377405327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28188702693 + 28188702694.

It is an arithmetic number, because the mean of its divisors is an integer number (28188702694).

Almost surely, 2^56377405387 is an apocalyptic number.

56377405387 is a deficient number, since it is larger than the sum of its proper divisors (1).

56377405387 is an equidigital number, since it uses as much as digits as its factorization.

56377405387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14817600, while the sum is 55.

The spelling of 56377405387 in words is "fifty-six billion, three hundred seventy-seven million, four hundred five thousand, three hundred eighty-seven".