136616031623 has 4 divisors (see below), whose sum is σ = 140308356840. Its totient is φ = 132923706408.

The previous prime is 136616031613. The next prime is 136616031637. The reversal of 136616031623 is 326130616631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136616031623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136616031613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1846162553 + ... + 1846162626.

It is an arithmetic number, because the mean of its divisors is an integer number (35077089210).

Almost surely, 2^136616031623 is an apocalyptic number.

136616031623 is a deficient number, since it is larger than the sum of its proper divisors (3692325217).

136616031623 is an equidigital number, since it uses as much as digits as its factorization.

136616031623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3692325216.

The product of its (nonzero) digits is 69984, while the sum is 38.

The spelling of 136616031623 in words is "one hundred thirty-six billion, six hundred sixteen million, thirty-one thousand, six hundred twenty-three".