21364123356371 has 16 divisors (see below), whose sum is σ = 21978601482240. Its totient is φ = 20756713628160.

The previous prime is 21364123356361. The next prime is 21364123356379. The reversal of 21364123356371 is 17365332146312.

It is a cyclic number.

It is not a de Polignac number, because 21364123356371 - 2¹⁴ = 21364123339987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21364123356379) 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, 2653766 + ... + 7054836.

It is an arithmetic number, because the mean of its divisors is an integer number (1373662592640).

Almost surely, 2^{21364123356371} is an apocalyptic number.

21364123356371 is a deficient number, since it is larger than the sum of its proper divisors (614478125869).

21364123356371 is a wasteful number, since it uses less digits than its factorization.

21364123356371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4401874.

The product of its digits is 1632960, while the sum is 47.

The spelling of 21364123356371 in words is "twenty-one trillion, three hundred sixty-four billion, one hundred twenty-three million, three hundred fifty-six thousand, three hundred seventy-one".