136404362302621 has 16 divisors (see below), whose sum is σ = 158834379803904. Its totient is φ = 114710329977984.

The previous prime is 136404362302613. The next prime is 136404362302709. The reversal of 136404362302621 is 126203263404631.

It is a cyclic number.

It is not a de Polignac number, because 136404362302621 - 2³ = 136404362302613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136404362332621) 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, 22757281 + ... + 28119433.

It is an arithmetic number, because the mean of its divisors is an integer number (9927148737744).

Almost surely, 2^{136404362302621} is an apocalyptic number.

It is an amenable number.

136404362302621 is a deficient number, since it is larger than the sum of its proper divisors (22430017501283).

136404362302621 is an equidigital number, since it uses as much as digits as its factorization.

136404362302621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5430780.

The product of its (nonzero) digits is 746496, while the sum is 43.

The spelling of 136404362302621 in words is "one hundred thirty-six trillion, four hundred four billion, three hundred sixty-two million, three hundred two thousand, six hundred twenty-one".