51630556220132 has 6 divisors (see below), whose sum is σ = 90353473385238. Its totient is φ = 25815278110064.

The previous prime is 51630556220099. The next prime is 51630556220141. The reversal of 51630556220132 is 23102265503615.

It can be written as a sum of positive squares in only one way, i.e., 49221926715556 + 2408629504576 = 7015834^2 + 1551976^2 .

It is a super-2 number, since 2×51630556220132² (a number of 28 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 51630556220132.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6453819527513 + ... + 6453819527520.

It is an arithmetic number, because the mean of its divisors is an integer number (15058912230873).

Almost surely, 2^{51630556220132} is an apocalyptic number.

It is an amenable number.

51630556220132 is a deficient number, since it is larger than the sum of its proper divisors (38722917165106).

51630556220132 is a wasteful number, since it uses less digits than its factorization.

51630556220132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12907639055037 (or 12907639055035 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 51630556220132 in words is "fifty-one trillion, six hundred thirty billion, five hundred fifty-six million, two hundred twenty thousand, one hundred thirty-two".