56767987499 has 2 divisors, whose sum is σ = 56767987500. Its totient is φ = 56767987498.

The previous prime is 56767987457. The next prime is 56767987537. The reversal of 56767987499 is 99478976765.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56767987499 - 2¹² = 56767983403 is a prime.

It is not a weakly prime, because it can be changed into another prime (56767987439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28383993749 + 28383993750.

It is an arithmetic number, because the mean of its divisors is an integer number (28383993750).

Almost surely, 2^56767987499 is an apocalyptic number.

56767987499 is a deficient number, since it is larger than the sum of its proper divisors (1).

56767987499 is an equidigital number, since it uses as much as digits as its factorization.

56767987499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440270720, while the sum is 77.

The spelling of 56767987499 in words is "fifty-six billion, seven hundred sixty-seven million, nine hundred eighty-seven thousand, four hundred ninety-nine".