136987333923 has 16 divisors (see below), whose sum is σ = 199261840896. Its totient is φ = 83019486240.

The previous prime is 136987333867. The next prime is 136987333993. The reversal of 136987333923 is 329333789631.

It is a Cunningham number, because it is equal to 370118²-1.

It is not a de Polignac number, because 136987333923 - 2⁹ = 136987333411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136987333993) 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, 1048665 + ... + 1172037.

It is an arithmetic number, because the mean of its divisors is an integer number (12453865056).

Almost surely, 2^136987333923 is an apocalyptic number.

136987333923 is a deficient number, since it is larger than the sum of its proper divisors (62274506973).

136987333923 is a wasteful number, since it uses less digits than its factorization.

136987333923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157034.

The product of its digits is 13226976, while the sum is 57.

The spelling of 136987333923 in words is "one hundred thirty-six billion, nine hundred eighty-seven million, three hundred thirty-three thousand, nine hundred twenty-three".