51251746160 has 40 divisors (see below), whose sum is σ = 121113769056. Its totient is φ = 20164619520.

The previous prime is 51251746129. The next prime is 51251746303. The reversal of 51251746160 is 6164715215.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×51251746160³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5246324 + ... + 5256083.

Almost surely, 2^51251746160 is an apocalyptic number.

It is an amenable number.

51251746160 is an abundant number, since it is smaller than the sum of its proper divisors (69862022896).

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

51251746160 is a wasteful number, since it uses less digits than its factorization.

51251746160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10502481 (or 10502475 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 51251746160 in words is "fifty-one billion, two hundred fifty-one million, seven hundred forty-six thousand, one hundred sixty".