68002890231 has 4 divisors (see below), whose sum is σ = 90670520312. Its totient is φ = 45335260152.

The previous prime is 68002890227. The next prime is 68002890247. The reversal of 68002890231 is 13209820086.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 68002890231 - 2² = 68002890227 is a prime.

It is a super-2 number, since 2×68002890231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68002890231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68002890211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11333815036 + ... + 11333815041.

It is an arithmetic number, because the mean of its divisors is an integer number (22667630078).

Almost surely, 2^68002890231 is an apocalyptic number.

68002890231 is a deficient number, since it is larger than the sum of its proper divisors (22667630081).

68002890231 is a wasteful number, since it uses less digits than its factorization.

68002890231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22667630080.

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 68002890231 in words is "sixty-eight billion, two million, eight hundred ninety thousand, two hundred thirty-one".