68972967936 has 384 divisors, whose sum is σ = 217945728000. Its totient is φ = 21477851136.

The previous prime is 68972967923. The next prime is 68972967983. The reversal of 68972967936 is 63976927986.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224667495 + ... + 224667801.

It is an arithmetic number, because the mean of its divisors is an integer number (567567000).

Almost surely, 2^68972967936 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 68972967936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108972864000).

68972967936 is an abundant number, since it is smaller than the sum of its proper divisors (148972760064).

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

68972967936 is a wasteful number, since it uses less digits than its factorization.

68972967936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 568 counting only the distinct ones).

The product of its digits is 370355328, while the sum is 72.

The spelling of 68972967936 in words is "sixty-eight billion, nine hundred seventy-two million, nine hundred sixty-seven thousand, nine hundred thirty-six".