51848466864 has 40 divisors (see below), whose sum is σ = 139765435392. Its totient is φ = 16531394880.

The previous prime is 51848466829. The next prime is 51848466871. The reversal of 51848466864 is 46866484815.

It is a super-2 number, since 2×51848466864² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51848466798 and 51848466807.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23480992 + ... + 23483199.

Almost surely, 2^51848466864 is an apocalyptic number.

It is an amenable number.

51848466864 is an abundant number, since it is smaller than the sum of its proper divisors (87916968528).

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

51848466864 is a wasteful number, since it uses less digits than its factorization.

51848466864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46964225 (or 46964219 counting only the distinct ones).

The product of its digits is 35389440, while the sum is 60.

The spelling of 51848466864 in words is "fifty-one billion, eight hundred forty-eight million, four hundred sixty-six thousand, eight hundred sixty-four".