51919268164 has 27 divisors (see below), whose sum is σ = 92472687391. Its totient is φ = 25506424520.

The previous prime is 51919268147. The next prime is 51919268171. The reversal of 51919268164 is 46186291915.

The square root of 51919268164 is 227858.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×51919268164² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26886279 + ... + 26888209.

Almost surely, 2^51919268164 is an apocalyptic number.

51919268164 is the 227858-th square number.

It is an amenable number.

51919268164 is a deficient number, since it is larger than the sum of its proper divisors (40553419227).

51919268164 is an frugal number, since it uses more digits than its factorization.

51919268164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3984 (or 1992 counting only the distinct ones).

The product of its digits is 933120, while the sum is 52.

The spelling of 51919268164 in words is "fifty-one billion, nine hundred nineteen million, two hundred sixty-eight thousand, one hundred sixty-four".