238916555145 has 24 divisors (see below), whose sum is σ = 415065393600. Its totient is φ = 127131896736.

The previous prime is 238916555023. The next prime is 238916555159. The reversal of 238916555145 is 541555619832.

238916555145 is a `hidden beast` number, since 2 + 3 + 89 + 1 + 6 + 5 + 551 + 4 + 5 = 666.

It is not a de Polignac number, because 238916555145 - 2⁸ = 238916554889 is a prime.

It is a super-2 number, since 2×238916555145² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 238916555091 and 238916555100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6027235 + ... + 6066744.

It is an arithmetic number, because the mean of its divisors is an integer number (17294391400).

Almost surely, 2^238916555145 is an apocalyptic number.

It is an amenable number.

238916555145 is a deficient number, since it is larger than the sum of its proper divisors (176148838455).

238916555145 is a wasteful number, since it uses less digits than its factorization.

238916555145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12094429 (or 12094426 counting only the distinct ones).

The product of its digits is 6480000, while the sum is 54.

The spelling of 238916555145 in words is "two hundred thirty-eight billion, nine hundred sixteen million, five hundred fifty-five thousand, one hundred forty-five".