51868240516 has 27 divisors (see below), whose sum is σ = 94906673463. Its totient is φ = 24801539400.

The previous prime is 51868240441. The next prime is 51868240531. The reversal of 51868240516 is 61504286815.

The square root of 51868240516 is 227746.

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

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10473841 + ... + 10478791.

Almost surely, 2^51868240516 is an apocalyptic number.

51868240516 is the 227746-th square number.

It is an amenable number.

51868240516 is a deficient number, since it is larger than the sum of its proper divisors (43038432947).

51868240516 is an frugal number, since it uses more digits than its factorization.

51868240516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9952 (or 4976 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 46.

The spelling of 51868240516 in words is "fifty-one billion, eight hundred sixty-eight million, two hundred forty thousand, five hundred sixteen".