136331132781 has 16 divisors (see below), whose sum is σ = 182867742720. Its totient is φ = 90342603120.

The previous prime is 136331132711. The next prime is 136331132789. The reversal of 136331132781 is 187231133631.

It is a happy number.

It is not a de Polignac number, because 136331132781 - 2¹⁹ = 136330608493 is a prime.

It is a super-2 number, since 2×136331132781² (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 (136331132789) 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 15 ways as a sum of consecutive naturals, for example, 131436 + ... + 538458.

It is an arithmetic number, because the mean of its divisors is an integer number (11429233920).

Almost surely, 2^136331132781 is an apocalyptic number.

It is an amenable number.

136331132781 is a deficient number, since it is larger than the sum of its proper divisors (46536609939).

136331132781 is a wasteful number, since it uses less digits than its factorization.

136331132781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407696.

The product of its digits is 54432, while the sum is 39.

The spelling of 136331132781 in words is "one hundred thirty-six billion, three hundred thirty-one million, one hundred thirty-two thousand, seven hundred eighty-one".