51148566684 has 36 divisors (see below), whose sum is σ = 133462929600. Its totient is φ = 16499537280.

The previous prime is 51148566683. The next prime is 51148566701. The reversal of 51148566684 is 48666584115.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51148566684.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51148566683) 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 11 ways as a sum of consecutive naturals, for example, 22914909 + ... + 22917140.

It is an arithmetic number, because the mean of its divisors is an integer number (3707303600).

Almost surely, 2^51148566684 is an apocalyptic number.

It is an amenable number.

51148566684 is an abundant number, since it is smaller than the sum of its proper divisors (82314362916).

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

51148566684 is a wasteful number, since it uses less digits than its factorization.

51148566684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45832090 (or 45832085 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The spelling of 51148566684 in words is "fifty-one billion, one hundred forty-eight million, five hundred sixty-six thousand, six hundred eighty-four".