21903275232 has 96 divisors (see below), whose sum is σ = 65090057760. Its totient is φ = 7163320320.

The previous prime is 21903275231. The next prime is 21903275267. The reversal of 21903275232 is 23257230912.

It is a happy number.

21903275232 is a `hidden beast` number, since 21 + 90 + 3 + 27 + 523 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21903275231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193369 + ... + 284952.

It is an arithmetic number, because the mean of its divisors is an integer number (678021435).

Almost surely, 2^21903275232 is an apocalyptic number.

It is an amenable number.

21903275232 is an abundant number, since it is smaller than the sum of its proper divisors (43186782528).

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

21903275232 is a wasteful number, since it uses less digits than its factorization.

21903275232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478393 (or 478379 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 21903275232 in words is "twenty-one billion, nine hundred three million, two hundred seventy-five thousand, two hundred thirty-two".