36664757677621 has 32 divisors (see below), whose sum is σ = 39342073833216. Its totient is φ = 34084385280000.

The previous prime is 36664757677573. The next prime is 36664757677633. The reversal of 36664757677621 is 12677675746663.

It is a cyclic number.

It is not a de Polignac number, because 36664757677621 - 2⁹ = 36664757677109 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 (36664757677021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 521356141 + ... + 521426461.

It is an arithmetic number, because the mean of its divisors is an integer number (1229439807288).

Almost surely, 2^{36664757677621} is an apocalyptic number.

It is an amenable number.

36664757677621 is a deficient number, since it is larger than the sum of its proper divisors (2677316155595).

36664757677621 is a wasteful number, since it uses less digits than its factorization.

36664757677621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72493.

The product of its digits is 2240421120, while the sum is 73.

The spelling of 36664757677621 in words is "thirty-six trillion, six hundred sixty-four billion, seven hundred fifty-seven million, six hundred seventy-seven thousand, six hundred twenty-one".