56635699963 has 2 divisors, whose sum is σ = 56635699964. Its totient is φ = 56635699962.

The previous prime is 56635699961. The next prime is 56635699969. The reversal of 56635699963 is 36999653665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56635699963 - 2¹ = 56635699961 is a prime.

Together with 56635699961, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56635699961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28317849981 + 28317849982.

It is an arithmetic number, because the mean of its divisors is an integer number (28317849982).

Almost surely, 2^56635699963 is an apocalyptic number.

56635699963 is a deficient number, since it is larger than the sum of its proper divisors (1).

56635699963 is an equidigital number, since it uses as much as digits as its factorization.

56635699963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 212576400, while the sum is 67.

The spelling of 56635699963 in words is "fifty-six billion, six hundred thirty-five million, six hundred ninety-nine thousand, nine hundred sixty-three".