238439561799 has 16 divisors (see below), whose sum is σ = 336586435200. Its totient is φ = 149722919136.

The previous prime is 238439561783. The next prime is 238439561813. The reversal of 238439561799 is 997165934832.

It is not a de Polignac number, because 238439561799 - 2⁴ = 238439561783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238439561719) 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, 12080169 + ... + 12099890.

It is an arithmetic number, because the mean of its divisors is an integer number (21036652200).

Almost surely, 2^238439561799 is an apocalyptic number.

238439561799 is a deficient number, since it is larger than the sum of its proper divisors (98146873401).

238439561799 is a wasteful number, since it uses less digits than its factorization.

238439561799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24180254.

The product of its digits is 88179840, while the sum is 66.

The spelling of 238439561799 in words is "two hundred thirty-eight billion, four hundred thirty-nine million, five hundred sixty-one thousand, seven hundred ninety-nine".