21352542183 has 72 divisors (see below), whose sum is σ = 36413060112. Its totient is φ = 12020827392.

The previous prime is 21352542149. The next prime is 21352542187. The reversal of 21352542183 is 38124525312.

21352542183 is a `hidden beast` number, since 2 + 1 + 35 + 2 + 542 + 1 + 83 = 666.

It is not a de Polignac number, because 21352542183 - 2⁶ = 21352542119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21352542187) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9294691 + ... + 9296987.

It is an arithmetic number, because the mean of its divisors is an integer number (505736946).

Almost surely, 2^21352542183 is an apocalyptic number.

21352542183 is a deficient number, since it is larger than the sum of its proper divisors (15060517929).

21352542183 is a wasteful number, since it uses less digits than its factorization.

21352542183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621 (or 2611 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The spelling of 21352542183 in words is "twenty-one billion, three hundred fifty-two million, five hundred forty-two thousand, one hundred eighty-three".