51616737056 has 24 divisors (see below), whose sum is σ = 103782591360. Its totient is φ = 25259253568.

The previous prime is 51616737043. The next prime is 51616737059. The reversal of 51616737056 is 65073761615.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 51616737056.

It is not an unprimeable number, because it can be changed into a prime (51616737059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17158316 + ... + 17161323.

It is an arithmetic number, because the mean of its divisors is an integer number (4324274640).

Almost surely, 2^51616737056 is an apocalyptic number.

It is an amenable number.

51616737056 is an abundant number, since it is smaller than the sum of its proper divisors (52165854304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51616737056 is a wasteful number, since it uses less digits than its factorization.

51616737056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34319696 (or 34319688 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 47.

The spelling of 51616737056 in words is "fifty-one billion, six hundred sixteen million, seven hundred thirty-seven thousand, fifty-six".