238891853505 has 32 divisors (see below), whose sum is σ = 384888222720. Its totient is φ = 126522475200.

The previous prime is 238891853477. The next prime is 238891853537. The reversal of 238891853505 is 505358198832.

238891853505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 238891853505 - 2⁹ = 238891852993 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7365454 + ... + 7397816.

It is an arithmetic number, because the mean of its divisors is an integer number (12027756960).

Almost surely, 2^238891853505 is an apocalyptic number.

It is an amenable number.

238891853505 is a deficient number, since it is larger than the sum of its proper divisors (145996369215).

238891853505 is a wasteful number, since it uses less digits than its factorization.

238891853505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35781.

The product of its (nonzero) digits is 10368000, while the sum is 57.

The spelling of 238891853505 in words is "two hundred thirty-eight billion, eight hundred ninety-one million, eight hundred fifty-three thousand, five hundred five".