21676271794 has 48 divisors (see below), whose sum is σ = 34098444288. Its totient is φ = 10333416000.

The previous prime is 21676271779. The next prime is 21676271803. The reversal of 21676271794 is 49717267612.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50292759 + ... + 50293189.

It is an arithmetic number, because the mean of its divisors is an integer number (710384256).

Almost surely, 2^21676271794 is an apocalyptic number.

21676271794 is a deficient number, since it is larger than the sum of its proper divisors (12422172494).

21676271794 is a wasteful number, since it uses less digits than its factorization.

21676271794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823 (or 792 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 52.

The spelling of 21676271794 in words is "twenty-one billion, six hundred seventy-six million, two hundred seventy-one thousand, seven hundred ninety-four".