51516278883 has 20 divisors (see below), whose sum is σ = 77089859880. Its totient is φ = 34284632832.

The previous prime is 51516278873. The next prime is 51516278941. The reversal of 51516278883 is 38887261515.

51516278883 is a `hidden beast` number, since 5 + 1 + 5 + 1 + 627 + 8 + 8 + 8 + 3 = 666.

It is not a de Polignac number, because 51516278883 - 2¹³ = 51516270691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51516278873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 504393 + ... + 597866.

It is an arithmetic number, because the mean of its divisors is an integer number (3854492994).

Almost surely, 2^51516278883 is an apocalyptic number.

51516278883 is a deficient number, since it is larger than the sum of its proper divisors (25573580997).

51516278883 is a wasteful number, since it uses less digits than its factorization.

51516278883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102848 (or 1102839 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The spelling of 51516278883 in words is "fifty-one billion, five hundred sixteen million, two hundred seventy-eight thousand, eight hundred eighty-three".