136583120621 has 8 divisors (see below), whose sum is σ = 147694389120. Its totient is φ = 125813737408.

The previous prime is 136583120599. The next prime is 136583120623. The reversal of 136583120621 is 126021385631.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136583120621 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 (136583120623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85470491 + ... + 85472088.

It is an arithmetic number, because the mean of its divisors is an integer number (18461798640).

Almost surely, 2^136583120621 is an apocalyptic number.

It is an amenable number.

136583120621 is a deficient number, since it is larger than the sum of its proper divisors (11111268499).

136583120621 is a wasteful number, since it uses less digits than its factorization.

136583120621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170942643.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 136583120621 in words is "one hundred thirty-six billion, five hundred eighty-three million, one hundred twenty thousand, six hundred twenty-one".