21141323432 has 16 divisors (see below), whose sum is σ = 39678897600. Its totient is φ = 10560284080.

The previous prime is 21141323419. The next prime is 21141323459. The reversal of 21141323432 is 23432314112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1288544 + ... + 1304847.

It is an arithmetic number, because the mean of its divisors is an integer number (2479931100).

Almost surely, 2^21141323432 is an apocalyptic number.

It is an amenable number.

21141323432 is a deficient number, since it is larger than the sum of its proper divisors (18537574168).

21141323432 is a wasteful number, since it uses less digits than its factorization.

21141323432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594416 (or 2594412 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

Adding to 21141323432 its reverse (23432314112), we get a palindrome (44573637544).

The spelling of 21141323432 in words is "twenty-one billion, one hundred forty-one million, three hundred twenty-three thousand, four hundred thirty-two".