136793947521 has 16 divisors (see below), whose sum is σ = 227397731328. Its totient is φ = 71061790800.

The previous prime is 136793947501. The next prime is 136793947523. The reversal of 136793947521 is 125749397631.

It is not a de Polignac number, because 136793947521 - 2⁵ = 136793947489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136793947523) 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 15 ways as a sum of consecutive naturals, for example, 296090565 + ... + 296091026.

It is an arithmetic number, because the mean of its divisors is an integer number (14212358208).

Almost surely, 2^136793947521 is an apocalyptic number.

136793947521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

136793947521 is a deficient number, since it is larger than the sum of its proper divisors (90603783807).

136793947521 is a wasteful number, since it uses less digits than its factorization.

136793947521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592181612.

The product of its digits is 8573040, while the sum is 57.

The spelling of 136793947521 in words is "one hundred thirty-six billion, seven hundred ninety-three million, nine hundred forty-seven thousand, five hundred twenty-one".