238279007691 has 16 divisors (see below), whose sum is σ = 358989091200. Its totient is φ = 156160252584.

The previous prime is 238279007647. The next prime is 238279007699. The reversal of 238279007691 is 196700972832.

It is not a de Polignac number, because 238279007691 - 2⁷ = 238279007563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (238279007699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74787801 + ... + 74790986.

It is an arithmetic number, because the mean of its divisors is an integer number (22436818200).

Almost surely, 2^238279007691 is an apocalyptic number.

238279007691 is a deficient number, since it is larger than the sum of its proper divisors (120710083509).

238279007691 is a wasteful number, since it uses less digits than its factorization.

238279007691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149578855 (or 149578849 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 238279007691 in words is "two hundred thirty-eight billion, two hundred seventy-nine million, seven thousand, six hundred ninety-one".