136940920839 has 16 divisors (see below), whose sum is σ = 202888707840. Its totient is φ = 91287975960.

The previous prime is 136940920799. The next prime is 136940920841. The reversal of 136940920839 is 938029049631.

136940920839 is a `hidden beast` number, since 1 + 369 + 40 + 9 + 208 + 39 = 666.

It is not a de Polignac number, because 136940920839 - 2¹¹ = 136940918791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136940920849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275974 + ... + 591644.

It is an arithmetic number, because the mean of its divisors is an integer number (12680544240).

Almost surely, 2^136940920839 is an apocalyptic number.

136940920839 is a deficient number, since it is larger than the sum of its proper divisors (65947787001).

136940920839 is a wasteful number, since it uses less digits than its factorization.

136940920839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331747 (or 331741 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The spelling of 136940920839 in words is "one hundred thirty-six billion, nine hundred forty million, nine hundred twenty thousand, eight hundred thirty-nine".