68133407408 has 20 divisors (see below), whose sum is σ = 144009247848. Its totient is φ = 30969730560.

The previous prime is 68133407393. The next prime is 68133407413. The reversal of 68133407408 is 80470433186.

68133407408 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 2×68133407408² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193560641 + ... + 193560992.

Almost surely, 2^68133407408 is an apocalyptic number.

It is an amenable number.

68133407408 is an abundant number, since it is smaller than the sum of its proper divisors (75875840440).

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

68133407408 is a wasteful number, since it uses less digits than its factorization.

68133407408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387121652 (or 387121646 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 68133407408 in words is "sixty-eight billion, one hundred thirty-three million, four hundred seven thousand, four hundred eight".