21932472351 has 16 divisors (see below), whose sum is σ = 30038376800. Its totient is φ = 14224232448.

The previous prime is 21932472323. The next prime is 21932472383. The reversal of 21932472351 is 15327423912.

It is a happy number.

It is not a de Polignac number, because 21932472351 - 2¹¹ = 21932470303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21932472301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 980055 + ... + 1002183.

It is an arithmetic number, because the mean of its divisors is an integer number (1877398550).

Almost surely, 2^21932472351 is an apocalyptic number.

21932472351 is a deficient number, since it is larger than the sum of its proper divisors (8105904449).

21932472351 is a wasteful number, since it uses less digits than its factorization.

21932472351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31098.

The product of its digits is 90720, while the sum is 39.

The spelling of 21932472351 in words is "twenty-one billion, nine hundred thirty-two million, four hundred seventy-two thousand, three hundred fifty-one".