238874355261 has 16 divisors (see below), whose sum is σ = 353953600000. Its totient is φ = 159220020384.

The previous prime is 238874355217. The next prime is 238874355281. The reversal of 238874355261 is 162553478832.

238874355261 is a `hidden beast` number, since 2 + 3 + 8 + 87 + 4 + 3 + 552 + 6 + 1 = 666.

It is not a de Polignac number, because 238874355261 - 2⁶ = 238874355197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 238874355198 and 238874355207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238874355281) 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, 672136 + ... + 964113.

It is an arithmetic number, because the mean of its divisors is an integer number (22122100000).

Almost surely, 2^238874355261 is an apocalyptic number.

It is an amenable number.

238874355261 is a deficient number, since it is larger than the sum of its proper divisors (115079244739).

238874355261 is a wasteful number, since it uses less digits than its factorization.

238874355261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641665 (or 1641659 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 238874355261 in words is "two hundred thirty-eight billion, eight hundred seventy-four million, three hundred fifty-five thousand, two hundred sixty-one".