51611562130164 has 48 divisors (see below), whose sum is σ = 124963205875200. Its totient is φ = 16567091664480.

The previous prime is 51611562130151. The next prime is 51611562130199. The reversal of 51611562130164 is 46103126511615.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 704346514 + ... + 704419785.

It is an arithmetic number, because the mean of its divisors is an integer number (2603400122400).

Almost surely, 2^{51611562130164} is an apocalyptic number.

It is an amenable number.

51611562130164 is an abundant number, since it is smaller than the sum of its proper divisors (73351643745036).

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

51611562130164 is a wasteful number, since it uses less digits than its factorization.

51611562130164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408766420 (or 1408766418 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

Adding to 51611562130164 its reverse (46103126511615), we get a palindrome (97714688641779).

The spelling of 51611562130164 in words is "fifty-one trillion, six hundred eleven billion, five hundred sixty-two million, one hundred thirty thousand, one hundred sixty-four".