51288423216 has 80 divisors (see below), whose sum is σ = 133937141760. Its totient is φ = 16911082240.

The previous prime is 51288423181. The next prime is 51288423217. The reversal of 51288423216 is 61232488215.

51288423216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51288423217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1625446 + ... + 1656698.

It is an arithmetic number, because the mean of its divisors is an integer number (1674214272).

Almost surely, 2^51288423216 is an apocalyptic number.

It is an amenable number.

51288423216 is an abundant number, since it is smaller than the sum of its proper divisors (82648718544).

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

51288423216 is a wasteful number, since it uses less digits than its factorization.

51288423216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31634 (or 31628 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The spelling of 51288423216 in words is "fifty-one billion, two hundred eighty-eight million, four hundred twenty-three thousand, two hundred sixteen".