21227743376 has 40 divisors (see below), whose sum is σ = 47211412800. Its totient is φ = 9057515904.

The previous prime is 21227743363. The next prime is 21227743403. The reversal of 21227743376 is 67334772212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392051 + ... + 442898.

It is an arithmetic number, because the mean of its divisors is an integer number (1180285320).

Almost surely, 2^21227743376 is an apocalyptic number.

It is an amenable number.

21227743376 is an abundant number, since it is smaller than the sum of its proper divisors (25983669424).

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

21227743376 is a wasteful number, since it uses less digits than its factorization.

21227743376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835191 (or 835185 counting only the distinct ones).

The product of its digits is 592704, while the sum is 44.

The spelling of 21227743376 in words is "twenty-one billion, two hundred twenty-seven million, seven hundred forty-three thousand, three hundred seventy-six".