232136646381 has 6 divisors (see below), whose sum is σ = 335308489230. Its totient is φ = 154757764248.

The previous prime is 232136646277. The next prime is 232136646383. The reversal of 232136646381 is 183646631232.

232136646381 is a `hidden beast` number, since 2 + 3 + 2 + 1 + 3 + 6 + 6 + 4 + 638 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 135685406025 + 96451240356 = 368355^2 + 310566^2 .

It is not a de Polignac number, because 232136646381 - 2²³ = 232128257773 is a prime.

It is a super-2 number, since 2×232136646381² (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 (232136646383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12896480346 + ... + 12896480363.

It is an arithmetic number, because the mean of its divisors is an integer number (55884748205).

Almost surely, 2^232136646381 is an apocalyptic number.

It is an amenable number.

232136646381 is a deficient number, since it is larger than the sum of its proper divisors (103171842849).

232136646381 is a wasteful number, since it uses less digits than its factorization.

232136646381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25792960715 (or 25792960712 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The spelling of 232136646381 in words is "two hundred thirty-two billion, one hundred thirty-six million, six hundred forty-six thousand, three hundred eighty-one".