56351804519 has 2 divisors, whose sum is σ = 56351804520. Its totient is φ = 56351804518.

The previous prime is 56351804501. The next prime is 56351804549. The reversal of 56351804519 is 91540815365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56351804519 - 2⁸ = 56351804263 is a prime.

It is a super-2 number, since 2×56351804519² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56351804549) 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 as a sum of consecutive naturals, namely, 28175902259 + 28175902260.

It is an arithmetic number, because the mean of its divisors is an integer number (28175902260).

Almost surely, 2^56351804519 is an apocalyptic number.

56351804519 is a deficient number, since it is larger than the sum of its proper divisors (1).

56351804519 is an equidigital number, since it uses as much as digits as its factorization.

56351804519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 56351804519 in words is "fifty-six billion, three hundred fifty-one million, eight hundred four thousand, five hundred nineteen".