238338864771 has 16 divisors (see below), whose sum is σ = 371629150464. Its totient is φ = 133026342624.

The previous prime is 238338864769. The next prime is 238338864793. The reversal of 238338864771 is 177468833832.

It is not a de Polignac number, because 238338864771 - 2¹ = 238338864769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (238338864871) 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, 131969676 + ... + 131971481.

It is an arithmetic number, because the mean of its divisors is an integer number (23226821904).

Almost surely, 2^238338864771 is an apocalyptic number.

238338864771 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

238338864771 is a deficient number, since it is larger than the sum of its proper divisors (133290285693).

238338864771 is a wasteful number, since it uses less digits than its factorization.

238338864771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263941210.

The product of its digits is 32514048, while the sum is 60.

The spelling of 238338864771 in words is "two hundred thirty-eight billion, three hundred thirty-eight million, eight hundred sixty-four thousand, seven hundred seventy-one".