51700239360 has 880 divisors, whose sum is σ = 231121693440. Its totient is φ = 10736271360.

The previous prime is 51700239359. The next prime is 51700239413. The reversal of 51700239360 is 6393200715.

It is a tau number, because it is divible by the number of its divisors (880).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 31932631 + ... + 31934249.

It is an arithmetic number, because the mean of its divisors is an integer number (262638288).

Almost surely, 2^51700239360 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 51700239360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115560846720).

51700239360 is an abundant number, since it is smaller than the sum of its proper divisors (179421454080).

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

51700239360 is a wasteful number, since it uses less digits than its factorization.

51700239360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674 (or 1647 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The spelling of 51700239360 in words is "fifty-one billion, seven hundred million, two hundred thirty-nine thousand, three hundred sixty".