21364766576271 has 16 divisors (see below), whose sum is σ = 32506952149600. Its totient is φ = 13858226967744.

The previous prime is 21364766576221. The next prime is 21364766576303. The reversal of 21364766576271 is 17267566746312.

21364766576271 is a `hidden beast` number, since 2 + 1 + 36 + 4 + 7 + 6 + 6 + 576 + 27 + 1 = 666.

It is not a de Polignac number, because 21364766576271 - 2⁷ = 21364766576143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21364766576199 and 21364766576208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21364766576201) 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, 10693075366 + ... + 10693077363.

It is an arithmetic number, because the mean of its divisors is an integer number (2031684509350).

Almost surely, 2^{21364766576271} is an apocalyptic number.

21364766576271 is a deficient number, since it is larger than the sum of its proper divisors (11142185573329).

21364766576271 is a wasteful number, since it uses less digits than its factorization.

21364766576271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21386152775 (or 21386152769 counting only the distinct ones).

The product of its digits is 106686720, while the sum is 63.

The spelling of 21364766576271 in words is "twenty-one trillion, three hundred sixty-four billion, seven hundred sixty-six million, five hundred seventy-six thousand, two hundred seventy-one".