51715479251260 has 192 divisors, whose sum is σ = 127184177151360. Its totient is φ = 17454054113280.

The previous prime is 51715479251213. The next prime is 51715479251281. The reversal of 51715479251260 is 6215297451715.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2208447072 + ... + 2208470488.

It is an arithmetic number, because the mean of its divisors is an integer number (662417589330).

Almost surely, 2^{51715479251260} 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 51715479251260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63592088575680).

51715479251260 is an abundant number, since it is smaller than the sum of its proper divisors (75468697900100).

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

51715479251260 is a wasteful number, since it uses less digits than its factorization.

51715479251260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31616 (or 31614 counting only the distinct ones).

The product of its (nonzero) digits is 5292000, while the sum is 55.

The spelling of 51715479251260 in words is "fifty-one trillion, seven hundred fifteen billion, four hundred seventy-nine million, two hundred fifty-one thousand, two hundred sixty".