136403685983 has 4 divisors (see below), whose sum is σ = 136404529560. Its totient is φ = 136402842408.

The previous prime is 136403685947. The next prime is 136403686007. The reversal of 136403685983 is 389586304631.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 136403685983 - 2⁶ = 136403685919 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 (136403685083) 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, 94685 + ... + 530822.

It is an arithmetic number, because the mean of its divisors is an integer number (34101132390).

Almost surely, 2^136403685983 is an apocalyptic number.

136403685983 is a deficient number, since it is larger than the sum of its proper divisors (843577).

136403685983 is an equidigital number, since it uses as much as digits as its factorization.

136403685983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843576.

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 136403685983 in words is "one hundred thirty-six billion, four hundred three million, six hundred eighty-five thousand, nine hundred eighty-three".