21602253875148 has 18 divisors (see below), whose sum is σ = 54605697295604. Its totient is φ = 7200751291704.

The previous prime is 21602253875101. The next prime is 21602253875159. The reversal of 21602253875148 is 84157835220612.

It is a happy number.

21602253875148 is a `hidden beast` number, since 2 + 1 + 6 + 0 + 22 + 538 + 75 + 14 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 21602253875094 and 21602253875103.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 300031303786 + ... + 300031303857.

Almost surely, 2^{21602253875148} is an apocalyptic number.

It is an amenable number.

21602253875148 is an abundant number, since it is smaller than the sum of its proper divisors (33003443420456).

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

21602253875148 is a wasteful number, since it uses less digits than its factorization.

21602253875148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600062607653 (or 600062607648 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 21602253875148 in words is "twenty-one trillion, six hundred two billion, two hundred fifty-three million, eight hundred seventy-five thousand, one hundred forty-eight".