238916555143 has 8 divisors (see below), whose sum is σ = 278199331488. Its totient is φ = 200921738784.

The previous prime is 238916555023. The next prime is 238916555159. The reversal of 238916555143 is 341555619832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238916555143 is a prime.

It is a super-2 number, since 2×238916555143² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238916555743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321989596 + ... + 321990337.

It is an arithmetic number, because the mean of its divisors is an integer number (34774916436).

Almost surely, 2^238916555143 is an apocalyptic number.

238916555143 is a deficient number, since it is larger than the sum of its proper divisors (39282776345).

238916555143 is an equidigital number, since it uses as much as digits as its factorization.

238916555143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643979993.

The product of its digits is 3888000, while the sum is 52.

The spelling of 238916555143 in words is "two hundred thirty-eight billion, nine hundred sixteen million, five hundred fifty-five thousand, one hundred forty-three".