21744993274 has 16 divisors (see below), whose sum is σ = 33394350528. Its totient is φ = 10613820672.

The previous prime is 21744993269. The next prime is 21744993299. The reversal of 21744993274 is 47239944712.

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, 90394 + ... + 227290.

It is an arithmetic number, because the mean of its divisors is an integer number (2087146908).

Almost surely, 2^21744993274 is an apocalyptic number.

21744993274 is a deficient number, since it is larger than the sum of its proper divisors (11649357254).

21744993274 is a wasteful number, since it uses less digits than its factorization.

21744993274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138789.

The product of its digits is 3048192, while the sum is 52.

The spelling of 21744993274 in words is "twenty-one billion, seven hundred forty-four million, nine hundred ninety-three thousand, two hundred seventy-four".