136939387867 has 8 divisors (see below), whose sum is σ = 144702051840. Its totient is φ = 129327455400.

The previous prime is 136939387843. The next prime is 136939387873. The reversal of 136939387867 is 768783939631.

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 136939387867 - 2¹¹ = 136939385819 is a prime.

It is a super-3 number, since 3×136939387867³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136939387796 and 136939387805.

It is not an unprimeable number, because it can be changed into a prime (136939387877) 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, 37681009 + ... + 37684642.

It is an arithmetic number, because the mean of its divisors is an integer number (18087756480).

Almost surely, 2^136939387867 is an apocalyptic number.

136939387867 is a deficient number, since it is larger than the sum of its proper divisors (7762663973).

136939387867 is an equidigital number, since it uses as much as digits as its factorization.

136939387867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75365753.

The product of its digits is 246903552, while the sum is 70.

The spelling of 136939387867 in words is "one hundred thirty-six billion, nine hundred thirty-nine million, three hundred eighty-seven thousand, eight hundred sixty-seven".