51705963500 has 96 divisors (see below), whose sum is σ = 119602129920. Its totient is φ = 19473048000.

The previous prime is 51705963499. The next prime is 51705963509. The reversal of 51705963500 is 536950715.

51705963500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51705963500² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51705963509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1531805 + ... + 1565195.

It is an arithmetic number, because the mean of its divisors is an integer number (1245855520).

Almost surely, 2^51705963500 is an apocalyptic number.

51705963500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51705963500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59801064960).

51705963500 is an abundant number, since it is smaller than the sum of its proper divisors (67896166420).

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

51705963500 is a wasteful number, since it uses less digits than its factorization.

51705963500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33592 (or 33580 counting only the distinct ones).

The product of its (nonzero) digits is 141750, while the sum is 41.

The spelling of 51705963500 in words is "fifty-one billion, seven hundred five million, nine hundred sixty-three thousand, five hundred".