51596400372 has 72 divisors (see below), whose sum is σ = 136600133376. Its totient is φ = 15130896000.

The previous prime is 51596400371. The next prime is 51596400379. The reversal of 51596400372 is 27300469515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51596400371) 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, 528129 + ... + 618152.

Almost surely, 2^51596400372 is an apocalyptic number.

It is an amenable number.

51596400372 is an abundant number, since it is smaller than the sum of its proper divisors (85003733004).

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

51596400372 is a wasteful number, since it uses less digits than its factorization.

51596400372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146341 (or 1146328 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

Adding to 51596400372 its reverse (27300469515), we get a palindrome (78896869887).

The spelling of 51596400372 in words is "fifty-one billion, five hundred ninety-six million, four hundred thousand, three hundred seventy-two".