21364166114254 has 16 divisors (see below), whose sum is σ = 32433087189888. Its totient is φ = 10553142913272.

The previous prime is 21364166114251. The next prime is 21364166114267. The reversal of 21364166114254 is 45241166146312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21364166114251) 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, 5958199 + ... + 8844685.

It is an arithmetic number, because the mean of its divisors is an integer number (2027067949368).

Almost surely, 2^{21364166114254} is an apocalyptic number.

21364166114254 is a deficient number, since it is larger than the sum of its proper divisors (11068921075634).

21364166114254 is a wasteful number, since it uses less digits than its factorization.

21364166114254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931159.

The product of its digits is 829440, while the sum is 46.

The spelling of 21364166114254 in words is "twenty-one trillion, three hundred sixty-four billion, one hundred sixty-six million, one hundred fourteen thousand, two hundred fifty-four".