68531933736 has 160 divisors (see below), whose sum is σ = 220849200000. Its totient is φ = 19448947584.

The previous prime is 68531933711. The next prime is 68531933759. The reversal of 68531933736 is 63733913586.

68531933736 is a `hidden beast` number, since 6 + 8 + 531 + 9 + 33 + 73 + 6 = 666.

68531933736 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 625165 + ... + 726563.

It is an arithmetic number, because the mean of its divisors is an integer number (1380307500).

Almost surely, 2^68531933736 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 68531933736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110424600000).

68531933736 is an abundant number, since it is smaller than the sum of its proper divisors (152317266264).

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

68531933736 is a wasteful number, since it uses less digits than its factorization.

68531933736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101573 (or 101560 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 54.

The spelling of 68531933736 in words is "sixty-eight billion, five hundred thirty-one million, nine hundred thirty-three thousand, seven hundred thirty-six".