51011500563 has 24 divisors (see below), whose sum is σ = 74738339520. Its totient is φ = 33522128640.

The previous prime is 51011500541. The next prime is 51011500577. The reversal of 51011500563 is 36500511015.

51011500563 is a `hidden beast` number, since 5 + 101 + 1 + 500 + 56 + 3 = 666.

It is not a de Polignac number, because 51011500563 - 2⁸ = 51011500307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51011500513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 377323 + ... + 494363.

It is an arithmetic number, because the mean of its divisors is an integer number (3114097480).

Almost surely, 2^51011500563 is an apocalyptic number.

51011500563 is a deficient number, since it is larger than the sum of its proper divisors (23726838957).

51011500563 is a wasteful number, since it uses less digits than its factorization.

51011500563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117739 (or 117736 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The spelling of 51011500563 in words is "fifty-one billion, eleven million, five hundred thousand, five hundred sixty-three".