238520685567 has 32 divisors (see below), whose sum is σ = 338866848000. Its totient is φ = 148802607360.

The previous prime is 238520685563. The next prime is 238520685581. The reversal of 238520685567 is 765586025832.

It is not a de Polignac number, because 238520685567 - 2² = 238520685563 is a prime.

It is a super-2 number, since 2×238520685567² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238520685563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5146317 + ... + 5192457.

It is an arithmetic number, because the mean of its divisors is an integer number (10589589000).

Almost surely, 2^238520685567 is an apocalyptic number.

238520685567 is a deficient number, since it is larger than the sum of its proper divisors (100346162433).

238520685567 is a wasteful number, since it uses less digits than its factorization.

238520685567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47271.

The product of its (nonzero) digits is 24192000, while the sum is 57.

The spelling of 238520685567 in words is "two hundred thirty-eight billion, five hundred twenty million, six hundred eighty-five thousand, five hundred sixty-seven".