51715700650020 has 192 divisors, whose sum is σ = 166333309148160. Its totient is φ = 11873629555200.

The previous prime is 51715700650007. The next prime is 51715700650049. The reversal of 51715700650020 is 2005600751715.

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, 40158735 + ... + 41426505.

It is an arithmetic number, because the mean of its divisors is an integer number (866319318480).

Almost surely, 2^{51715700650020} 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 51715700650020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83166654574080).

51715700650020 is an abundant number, since it is smaller than the sum of its proper divisors (114617608498140).

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

51715700650020 is a wasteful number, since it uses less digits than its factorization.

51715700650020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271066 (or 1271064 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 39.

The spelling of 51715700650020 in words is "fifty-one trillion, seven hundred fifteen billion, seven hundred million, six hundred fifty thousand, twenty".