56719810519 has 2 divisors, whose sum is σ = 56719810520. Its totient is φ = 56719810518.

The previous prime is 56719810471. The next prime is 56719810571. The reversal of 56719810519 is 91501891765.

It is an a-pointer prime, because the next prime (56719810571) can be obtained adding 56719810519 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56719810519 - 2⁷ = 56719810391 is a prime.

It is a super-2 number, since 2×56719810519² (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 (56719810919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28359905259 + 28359905260.

It is an arithmetic number, because the mean of its divisors is an integer number (28359905260).

Almost surely, 2^56719810519 is an apocalyptic number.

56719810519 is a deficient number, since it is larger than the sum of its proper divisors (1).

56719810519 is an equidigital number, since it uses as much as digits as its factorization.

56719810519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 52.

The spelling of 56719810519 in words is "fifty-six billion, seven hundred nineteen million, eight hundred ten thousand, five hundred nineteen".