56784031919 has 4 divisors (see below), whose sum is σ = 59252902896. Its totient is φ = 54315160944.

The previous prime is 56784031903. The next prime is 56784031933. The reversal of 56784031919 is 91913048765.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56784031919 - 2⁴ = 56784031903 is a prime.

It is a super-2 number, since 2×56784031919² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56784031019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1234435454 + ... + 1234435499.

It is an arithmetic number, because the mean of its divisors is an integer number (14813225724).

Almost surely, 2^56784031919 is an apocalyptic number.

56784031919 is a deficient number, since it is larger than the sum of its proper divisors (2468870977).

56784031919 is a wasteful number, since it uses less digits than its factorization.

56784031919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2468870976.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 56784031919 in words is "fifty-six billion, seven hundred eighty-four million, thirty-one thousand, nine hundred nineteen".