136344443521 has 16 divisors (see below), whose sum is σ = 160191618048. Its totient is φ = 114407251200.

The previous prime is 136344443513. The next prime is 136344443531. The reversal of 136344443521 is 125344443631.

It is not a de Polignac number, because 136344443521 - 2³ = 136344443513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136344443531) 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, 3377760 + ... + 3417886.

It is an arithmetic number, because the mean of its divisors is an integer number (10011976128).

Almost surely, 2^136344443521 is an apocalyptic number.

136344443521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

136344443521 is a deficient number, since it is larger than the sum of its proper divisors (23847174527).

136344443521 is a wasteful number, since it uses less digits than its factorization.

136344443521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63912.

The product of its digits is 414720, while the sum is 40.

The spelling of 136344443521 in words is "one hundred thirty-six billion, three hundred forty-four million, four hundred forty-three thousand, five hundred twenty-one".