56873377870819 has 2 divisors, whose sum is σ = 56873377870820. Its totient is φ = 56873377870818.

The previous prime is 56873377870807. The next prime is 56873377870913. The reversal of 56873377870819 is 91807877337865.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56873377870819 - 2³³ = 56864787936227 is a prime.

It is a super-2 number, since 2×56873377870819² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56873377871819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28436688935409 + 28436688935410.

It is an arithmetic number, because the mean of its divisors is an integer number (28436688935410).

Almost surely, 2^{56873377870819} is an apocalyptic number.

56873377870819 is a deficient number, since it is larger than the sum of its proper divisors (1).

56873377870819 is an equidigital number, since it uses as much as digits as its factorization.

56873377870819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2987228160, while the sum is 79.

The spelling of 56873377870819 in words is "fifty-six trillion, eight hundred seventy-three billion, three hundred seventy-seven million, eight hundred seventy thousand, eight hundred nineteen".