233256325638 has 16 divisors (see below), whose sum is σ = 533157315840. Its totient is φ = 66644664456.

The previous prime is 233256325619. The next prime is 233256325639. The reversal of 233256325638 is 836523652332.

It is a super-2 number, since 2×233256325638² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233256325639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2776860978 + ... + 2776861061.

It is an arithmetic number, because the mean of its divisors is an integer number (33322332240).

Almost surely, 2^233256325638 is an apocalyptic number.

233256325638 is an abundant number, since it is smaller than the sum of its proper divisors (299900990202).

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

233256325638 is a wasteful number, since it uses less digits than its factorization.

233256325638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5553722051.

The product of its digits is 4665600, while the sum is 48.

The spelling of 233256325638 in words is "two hundred thirty-three billion, two hundred fifty-six million, three hundred twenty-five thousand, six hundred thirty-eight".