21927643348 has 96 divisors (see below), whose sum is σ = 44852169600. Its totient is φ = 9294372864.

The previous prime is 21927643321. The next prime is 21927643351. The reversal of 21927643348 is 84334672912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4252740 + ... + 4257892.

It is an arithmetic number, because the mean of its divisors is an integer number (467210100).

Almost surely, 2^21927643348 is an apocalyptic number.

It is an amenable number.

21927643348 is an abundant number, since it is smaller than the sum of its proper divisors (22924526252).

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

21927643348 is a wasteful number, since it uses less digits than its factorization.

21927643348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5321 (or 5319 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 49.

The spelling of 21927643348 in words is "twenty-one billion, nine hundred twenty-seven million, six hundred forty-three thousand, three hundred forty-eight".