136752884621 has 4 divisors (see below), whose sum is σ = 139662520512. Its totient is φ = 133843248732.

The previous prime is 136752884581. The next prime is 136752884629. The reversal of 136752884621 is 126488257631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 126488257631 = 17 ⋅7440485743.

It is a cyclic number.

It is not a de Polignac number, because 136752884621 - 2¹⁴ = 136752868237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136752884629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1454817875 + ... + 1454817968.

It is an arithmetic number, because the mean of its divisors is an integer number (34915630128).

Almost surely, 2^136752884621 is an apocalyptic number.

It is an amenable number.

136752884621 is a deficient number, since it is larger than the sum of its proper divisors (2909635891).

136752884621 is an equidigital number, since it uses as much as digits as its factorization.

136752884621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909635890.

The product of its digits is 3870720, while the sum is 53.

The spelling of 136752884621 in words is "one hundred thirty-six billion, seven hundred fifty-two million, eight hundred eighty-four thousand, six hundred twenty-one".