51648178116 has 24 divisors (see below), whose sum is σ = 126855174880. Its totient is φ = 16309950912.

The previous prime is 51648178073. The next prime is 51648178117. The reversal of 51648178116 is 61187184615.

It is a super-2 number, since 2×51648178116² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51648178117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113263321 + ... + 113263776.

Almost surely, 2^51648178116 is an apocalyptic number.

It is an amenable number.

51648178116 is an abundant number, since it is smaller than the sum of its proper divisors (75206996764).

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

51648178116 is a wasteful number, since it uses less digits than its factorization.

51648178116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226527123 (or 226527121 counting only the distinct ones).

The product of its digits is 322560, while the sum is 48.

The spelling of 51648178116 in words is "fifty-one billion, six hundred forty-eight million, one hundred seventy-eight thousand, one hundred sixteen".