238902369855 has 16 divisors (see below), whose sum is σ = 382688799360. Its totient is φ = 127266261408.

The previous prime is 238902369851. The next prime is 238902369883. The reversal of 238902369855 is 558963209832.

It is not a de Polignac number, because 238902369855 - 2² = 238902369851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238902369851) 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, 9257677 + ... + 9283446.

It is an arithmetic number, because the mean of its divisors is an integer number (23918049960).

Almost surely, 2^238902369855 is an apocalyptic number.

238902369855 is a deficient number, since it is larger than the sum of its proper divisors (143786429505).

238902369855 is a wasteful number, since it uses less digits than its factorization.

238902369855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18541990.

The product of its (nonzero) digits is 27993600, while the sum is 60.

The spelling of 238902369855 in words is "two hundred thirty-eight billion, nine hundred two million, three hundred sixty-nine thousand, eight hundred fifty-five".