56644269587 has 2 divisors, whose sum is σ = 56644269588. Its totient is φ = 56644269586.

The previous prime is 56644269547. The next prime is 56644269589. The reversal of 56644269587 is 78596244665.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56644269587 is a prime.

Together with 56644269589, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56644269589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28322134793 + 28322134794.

It is an arithmetic number, because the mean of its divisors is an integer number (28322134794).

Almost surely, 2^56644269587 is an apocalyptic number.

56644269587 is a deficient number, since it is larger than the sum of its proper divisors (1).

56644269587 is an equidigital number, since it uses as much as digits as its factorization.

56644269587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87091200, while the sum is 62.

The spelling of 56644269587 in words is "fifty-six billion, six hundred forty-four million, two hundred sixty-nine thousand, five hundred eighty-seven".