136924421091 has 4 divisors (see below), whose sum is σ = 182565894792. Its totient is φ = 91282947392.

The previous prime is 136924420981. The next prime is 136924421093. The reversal of 136924421091 is 190124429631.

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

It is a cyclic number.

It is not a de Polignac number, because 136924421091 - 2⁹ = 136924420579 is a prime.

It is a super-2 number, since 2×136924421091² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136924421093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22820736846 + ... + 22820736851.

It is an arithmetic number, because the mean of its divisors is an integer number (45641473698).

Almost surely, 2^136924421091 is an apocalyptic number.

136924421091 is a deficient number, since it is larger than the sum of its proper divisors (45641473701).

136924421091 is an equidigital number, since it uses as much as digits as its factorization.

136924421091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45641473700.

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 136924421091 in words is "one hundred thirty-six billion, nine hundred twenty-four million, four hundred twenty-one thousand, ninety-one".