238434122985 has 16 divisors (see below), whose sum is σ = 381506112000. Its totient is φ = 127161027200.

The previous prime is 238434122957. The next prime is 238434122989. The reversal of 238434122985 is 589221434832.

It is not a de Polignac number, because 238434122985 - 2²¹ = 238432025833 is a prime.

It is a super-2 number, since 2×238434122985² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (238434122989) 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, 315016 + ... + 759014.

It is an arithmetic number, because the mean of its divisors is an integer number (23844132000).

Almost surely, 2^238434122985 is an apocalyptic number.

It is an amenable number.

238434122985 is a deficient number, since it is larger than the sum of its proper divisors (143071989015).

238434122985 is a wasteful number, since it uses less digits than its factorization.

238434122985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479808.

The product of its digits is 3317760, while the sum is 51.

The spelling of 238434122985 in words is "two hundred thirty-eight billion, four hundred thirty-four million, one hundred twenty-two thousand, nine hundred eighty-five".