51635044065 has 16 divisors (see below), whose sum is σ = 90126622656. Its totient is φ = 25035172800.

The previous prime is 51635044031. The next prime is 51635044093. The reversal of 51635044065 is 56044053615.

It is not a de Polignac number, because 51635044065 - 2⁶ = 51635044001 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156469666 + ... + 156469995.

It is an arithmetic number, because the mean of its divisors is an integer number (5632913916).

Almost surely, 2^51635044065 is an apocalyptic number.

51635044065 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51635044065 is a deficient number, since it is larger than the sum of its proper divisors (38491578591).

51635044065 is a wasteful number, since it uses less digits than its factorization.

51635044065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312939680.

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 51635044065 in words is "fifty-one billion, six hundred thirty-five million, forty-four thousand, sixty-five".