51132404436564 has 48 divisors (see below), whose sum is σ = 130380783777216. Its totient is φ = 15467814144000.

The previous prime is 51132404436551. The next prime is 51132404436569. The reversal of 51132404436564 is 46563440423115.

It is a super-2 number, since 2×51132404436564² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51132404436569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335596887 + ... + 335749214.

It is an arithmetic number, because the mean of its divisors is an integer number (2716266328692).

Almost surely, 2^{51132404436564} is an apocalyptic number.

It is an amenable number.

51132404436564 is an abundant number, since it is smaller than the sum of its proper divisors (79248379340652).

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

51132404436564 is a wasteful number, since it uses less digits than its factorization.

51132404436564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671346696 (or 671346694 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 48.

Adding to 51132404436564 its reverse (46563440423115), we get a palindrome (97695844859679).

The spelling of 51132404436564 in words is "fifty-one trillion, one hundred thirty-two billion, four hundred four million, four hundred thirty-six thousand, five hundred sixty-four".