7668992331 has 128 divisors (see below), whose sum is σ = 15668889600. Its totient is φ = 3577582080.

The previous prime is 7668992311. The next prime is 7668992333. The reversal of 7668992331 is 1332998667.

It is not a de Polignac number, because 7668992331 - 2⁶ = 7668992267 is a prime.

It is a super-2 number, since 2×7668992331² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (7668992333) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 996165 + ... + 1003833.

It is an arithmetic number, because the mean of its divisors is an integer number (122413200).

Almost surely, 2^7668992331 is an apocalyptic number.

7668992331 is an abundant number, since it is smaller than the sum of its proper divisors (7999897269).

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

7668992331 is a wasteful number, since it uses less digits than its factorization.

7668992331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7746 (or 7740 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 7668992331 is about 87572.7830493013. The cubic root of 7668992331 is about 1972.0265960444.

It can be divided in two parts, 7668 and 992331, that added together give a palindrome (999999).

The spelling of 7668992331 in words is "seven billion, six hundred sixty-eight million, nine hundred ninety-two thousand, three hundred thirty-one".