68260397392 has 80 divisors (see below), whose sum is σ = 146837655360. Its totient is φ = 30477747200.

The previous prime is 68260397351. The next prime is 68260397411. The reversal of 68260397392 is 29379306286.

It is a super-2 number, since 2×68260397392² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25345998 + ... + 25348690.

It is an arithmetic number, because the mean of its divisors is an integer number (1835470692).

Almost surely, 2^68260397392 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 68260397392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73418827680).

68260397392 is an abundant number, since it is smaller than the sum of its proper divisors (78577257968).

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

68260397392 is a wasteful number, since it uses less digits than its factorization.

68260397392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5212 (or 5206 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 55.

The spelling of 68260397392 in words is "sixty-eight billion, two hundred sixty million, three hundred ninety-seven thousand, three hundred ninety-two".