21066355962324 has 24 divisors (see below), whose sum is σ = 54616478421120. Its totient is φ = 7022118654072.

The previous prime is 21066355962319. The next prime is 21066355962341. The reversal of 21066355962324 is 42326955366012.

21066355962324 is a `hidden beast` number, since 2 + 1 + 0 + 6 + 6 + 3 + 5 + 5 + 9 + 623 + 2 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 97529425644 + ... + 97529425859.

It is an arithmetic number, because the mean of its divisors is an integer number (2275686600880).

Almost surely, 2^{21066355962324} is an apocalyptic number.

It is an amenable number.

21066355962324 is an abundant number, since it is smaller than the sum of its proper divisors (33550122458796).

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

21066355962324 is a wasteful number, since it uses less digits than its factorization.

21066355962324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195058851516 (or 195058851508 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 54.

The spelling of 21066355962324 in words is "twenty-one trillion, sixty-six billion, three hundred fifty-five million, nine hundred sixty-two thousand, three hundred twenty-four".