238553436209023 has 32 divisors (see below), whose sum is σ = 278793203270400. Its totient is φ = 202091407011840.

The previous prime is 238553436209003. The next prime is 238553436209051. The reversal of 238553436209023 is 320902634355832.

It is a cyclic number.

It is not a de Polignac number, because 238553436209023 - 2²⁵ = 238553402654591 is a prime.

It is a super-2 number, since 2×238553436209023² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238553436209003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10905786 + ... + 24413992.

It is an arithmetic number, because the mean of its divisors is an integer number (8712287602200).

Almost surely, 2^{238553436209023} is an apocalyptic number.

238553436209023 is a deficient number, since it is larger than the sum of its proper divisors (40239767061377).

238553436209023 is a wasteful number, since it uses less digits than its factorization.

238553436209023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13510227.

The product of its (nonzero) digits is 27993600, while the sum is 55.

The spelling of 238553436209023 in words is "two hundred thirty-eight trillion, five hundred fifty-three billion, four hundred thirty-six million, two hundred nine thousand, twenty-three".