21623522055214 has 16 divisors (see below), whose sum is σ = 32544818398080. Its totient is φ = 10775272436280.

The previous prime is 21623522055193. The next prime is 21623522055221. The reversal of 21623522055214 is 41255022532612.

It is a congruent number.

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, 3927354 + ... + 7659709.

It is an arithmetic number, because the mean of its divisors is an integer number (2034051149880).

Almost surely, 2^{21623522055214} is an apocalyptic number.

21623522055214 is a deficient number, since it is larger than the sum of its proper divisors (10921296342866).

21623522055214 is a wasteful number, since it uses less digits than its factorization.

21623522055214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11590215.

The product of its (nonzero) digits is 288000, while the sum is 40.

Adding to 21623522055214 its reverse (41255022532612), we get a palindrome (62878544587826).

The spelling of 21623522055214 in words is "twenty-one trillion, six hundred twenty-three billion, five hundred twenty-two million, fifty-five thousand, two hundred fourteen".