238164354158520 has 64 divisors (see below), whose sum is σ = 715762144494720. Its totient is φ = 63397687151744.

The previous prime is 238164354158519. The next prime is 238164354158569. The reversal of 238164354158520 is 25851453461832.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1762546074 + ... + 1762681193.

It is an arithmetic number, because the mean of its divisors is an integer number (11183783507730).

Almost surely, 2^{238164354158520} is an apocalyptic number.

238164354158520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238164354158520 is an abundant number, since it is smaller than the sum of its proper divisors (477597790336200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

238164354158520 is a wasteful number, since it uses less digits than its factorization.

238164354158520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3525227844 (or 3525227840 counting only the distinct ones).

The product of its (nonzero) digits is 27648000, while the sum is 57.

The spelling of 238164354158520 in words is "two hundred thirty-eight trillion, one hundred sixty-four billion, three hundred fifty-four million, one hundred fifty-eight thousand, five hundred twenty".