64036200020661 has 96 divisors (see below), whose sum is σ = 106973960895360. Its totient is φ = 36481508352000.

The previous prime is 64036200020651. The next prime is 64036200020791. The reversal of 64036200020661 is 16602000263046.

64036200020661 is a `hidden beast` number, since 6 + 4 + 0 + 3 + 620 + 0 + 0 + 20 + 6 + 6 + 1 = 666.

It is not a de Polignac number, because 64036200020661 - 2⁵ = 64036200020629 is a prime.

It is a super-2 number, since 2×64036200020661² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64036200020641) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6575228730 + ... + 6575238468.

It is an arithmetic number, because the mean of its divisors is an integer number (1114312092660).

Almost surely, 2^{64036200020661} is an apocalyptic number.

It is an amenable number.

64036200020661 is a deficient number, since it is larger than the sum of its proper divisors (42937760874699).

64036200020661 is a wasteful number, since it uses less digits than its factorization.

64036200020661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14227 (or 14224 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The spelling of 64036200020661 in words is "sixty-four trillion, thirty-six billion, two hundred million, twenty thousand, six hundred sixty-one".