21923434732 has 24 divisors (see below), whose sum is σ = 40969272960. Its totient is φ = 10242314880.

The previous prime is 21923434721. The next prime is 21923434739. The reversal of 21923434732 is 23743432912.

It is not an unprimeable number, because it can be changed into a prime (21923434739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3044713 + ... + 3051904.

It is an arithmetic number, because the mean of its divisors is an integer number (1707053040).

Almost surely, 2^21923434732 is an apocalyptic number.

It is an amenable number.

21923434732 is a deficient number, since it is larger than the sum of its proper divisors (19045838228).

21923434732 is a wasteful number, since it uses less digits than its factorization.

21923434732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6096681 (or 6096679 counting only the distinct ones).

The product of its digits is 217728, while the sum is 40.

The spelling of 21923434732 in words is "twenty-one billion, nine hundred twenty-three million, four hundred thirty-four thousand, seven hundred thirty-two".