51173024864 has 48 divisors (see below), whose sum is σ = 108677711520. Its totient is φ = 23578905600.

The previous prime is 51173024849. The next prime is 51173024887. The reversal of 51173024864 is 46842037115.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 147677 + ... + 352355.

It is an arithmetic number, because the mean of its divisors is an integer number (2264118990).

Almost surely, 2^51173024864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51173024864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54338855760).

51173024864 is an abundant number, since it is smaller than the sum of its proper divisors (57504686656).

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

51173024864 is a wasteful number, since it uses less digits than its factorization.

51173024864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205303 (or 205295 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 51173024864 in words is "fifty-one billion, one hundred seventy-three million, twenty-four thousand, eight hundred sixty-four".