136233025581 has 8 divisors (see below), whose sum is σ = 181658612160. Its totient is φ = 90814728032.

The previous prime is 136233025559. The next prime is 136233025583. The reversal of 136233025581 is 185520332631.

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

It is a cyclic number.

It is not a de Polignac number, because 136233025581 - 2¹⁸ = 136232763437 is a prime.

It is a super-2 number, since 2×136233025581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136233025583) 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, 1778496 + ... + 1853513.

It is an arithmetic number, because the mean of its divisors is an integer number (22707326520).

Almost surely, 2^136233025581 is an apocalyptic number.

It is an amenable number.

136233025581 is a deficient number, since it is larger than the sum of its proper divisors (45425586579).

136233025581 is a wasteful number, since it uses less digits than its factorization.

136233025581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3644515.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 136233025581 in words is "one hundred thirty-six billion, two hundred thirty-three million, twenty-five thousand, five hundred eighty-one".