21364757020601 has 8 divisors (see below), whose sum is σ = 21426045324480. Its totient is φ = 21303555961968.

The previous prime is 21364757020589. The next prime is 21364757020603. The reversal of 21364757020601 is 10602075746312.

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-21364757020601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21364757020603) 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, 21320831 + ... + 22300388.

It is an arithmetic number, because the mean of its divisors is an integer number (2678255665560).

Almost surely, 2^{21364757020601} is an apocalyptic number.

It is an amenable number.

21364757020601 is a deficient number, since it is larger than the sum of its proper divisors (61288303879).

21364757020601 is an equidigital number, since it uses as much as digits as its factorization.

21364757020601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43622623.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 21364757020601 in words is "twenty-one trillion, three hundred sixty-four billion, seven hundred fifty-seven million, twenty thousand, six hundred one".