21364766554322 has 16 divisors (see below), whose sum is σ = 32505777883800. Its totient is φ = 10530430982400.

The previous prime is 21364766554319. The next prime is 21364766554331. The reversal of 21364766554322 is 22345566746312.

It can be written as a sum of positive squares in 4 ways, for example, as 16463054685961 + 4901711868361 = 4057469^2 + 2213981^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230884247 + ... + 230976762.

Almost surely, 2^{21364766554322} is an apocalyptic number.

21364766554322 is a deficient number, since it is larger than the sum of its proper divisors (11141011329478).

21364766554322 is a wasteful number, since it uses less digits than its factorization.

21364766554322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461861341.

The product of its digits is 43545600, while the sum is 56.

The spelling of 21364766554322 in words is "twenty-one trillion, three hundred sixty-four billion, seven hundred sixty-six million, five hundred fifty-four thousand, three hundred twenty-two".