68856631500 has 96 divisors (see below), whose sum is σ = 200837145600. Its totient is φ = 18331857600.

The previous prime is 68856631499. The next prime is 68856631507. The reversal of 68856631500 is 513665886.

It is a self number, because there is not a number n which added to its sum of digits gives 68856631500.

It is not an unprimeable number, because it can be changed into a prime (68856631507) 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, 891421 + ... + 965579.

It is an arithmetic number, because the mean of its divisors is an integer number (2092053600).

Almost surely, 2^68856631500 is an apocalyptic number.

68856631500 is a gapful number since it is divisible by the number (60) 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 68856631500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100418572800).

68856631500 is an abundant number, since it is smaller than the sum of its proper divisors (131980514100).

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

68856631500 is a wasteful number, since it uses less digits than its factorization.

68856631500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74800 (or 74788 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 68856631500 in words is "sixty-eight billion, eight hundred fifty-six million, six hundred thirty-one thousand, five hundred".