51127394320 has 40 divisors (see below), whose sum is σ = 118907061336. Its totient is φ = 20444786688.

The previous prime is 51127394317. The next prime is 51127394323. The reversal of 51127394320 is 2349372115.

It is an interprime number because it is at equal distance from previous prime (51127394317) and next prime (51127394323).

It can be written as a sum of positive squares in 4 ways, for example, as 7469799184 + 43657595136 = 86428^2 + 208944^2 .

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

It is a super-2 number, since 2×51127394320² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51127394320.

It is not an unprimeable number, because it can be changed into a prime (51127394323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175104 + ... + 364576.

Almost surely, 2^51127394320 is an apocalyptic number.

It is an amenable number.

51127394320 is an abundant number, since it is smaller than the sum of its proper divisors (67779667016).

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

51127394320 is a wasteful number, since it uses less digits than its factorization.

51127394320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192859 (or 192853 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The spelling of 51127394320 in words is "fifty-one billion, one hundred twenty-seven million, three hundred ninety-four thousand, three hundred twenty".