51894057268 has 72 divisors (see below), whose sum is σ = 103466613600. Its totient is φ = 22698404352.

The previous prime is 51894057239. The next prime is 51894057269. The reversal of 51894057268 is 86275049815.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51894057269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1141803 + ... + 1186381.

It is an arithmetic number, because the mean of its divisors is an integer number (1437036300).

Almost surely, 2^51894057268 is an apocalyptic number.

It is an amenable number.

51894057268 is a deficient number, since it is larger than the sum of its proper divisors (51572556332).

51894057268 is a wasteful number, since it uses less digits than its factorization.

51894057268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44689 (or 44670 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 51894057268 in words is "fifty-one billion, eight hundred ninety-four million, fifty-seven thousand, two hundred sixty-eight".