21620504614014 has 24 divisors (see below), whose sum is σ = 47638399999320. Its totient is φ = 7084685127408.

The previous prime is 21620504613941. The next prime is 21620504614021. The reversal of 21620504614014 is 41041640502612.

21620504614014 is a `hidden beast` number, since 2 + 1 + 6 + 2 + 0 + 504 + 6 + 140 + 1 + 4 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21620504614014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10179144237 + ... + 10179146360.

It is an arithmetic number, because the mean of its divisors is an integer number (1984933333305).

Almost surely, 2^{21620504614014} is an apocalyptic number.

21620504614014 is an abundant number, since it is smaller than the sum of its proper divisors (26017895385306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21620504614014 is a wasteful number, since it uses less digits than its factorization.

21620504614014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20358290664 (or 20358290661 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 21620504614014 in words is "twenty-one trillion, six hundred twenty billion, five hundred four million, six hundred fourteen thousand, fourteen".