136221166587 has 16 divisors (see below), whose sum is σ = 203495012352. Its totient is φ = 80326977120.

The previous prime is 136221166579. The next prime is 136221166589. The reversal of 136221166587 is 785661122631.

It is not a de Polignac number, because 136221166587 - 2³ = 136221166579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136221166589) 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, 55781403 + ... + 55783844.

It is an arithmetic number, because the mean of its divisors is an integer number (12718438272).

Almost surely, 2^136221166587 is an apocalyptic number.

136221166587 is a deficient number, since it is larger than the sum of its proper divisors (67273845765).

136221166587 is a wasteful number, since it uses less digits than its factorization.

136221166587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111565298.

The product of its digits is 725760, while the sum is 48.

The spelling of 136221166587 in words is "one hundred thirty-six billion, two hundred twenty-one million, one hundred sixty-six thousand, five hundred eighty-seven".