21764727334 has 8 divisors (see below), whose sum is σ = 37310961168. Its totient is φ = 9327740280.

The previous prime is 21764727289. The next prime is 21764727353. The reversal of 21764727334 is 43372746712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 777311677 + ... + 777311704.

It is an arithmetic number, because the mean of its divisors is an integer number (4663870146).

Almost surely, 2^21764727334 is an apocalyptic number.

21764727334 is a deficient number, since it is larger than the sum of its proper divisors (15546233834).

21764727334 is a wasteful number, since it uses less digits than its factorization.

21764727334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554623390.

The product of its digits is 1185408, while the sum is 46.

The spelling of 21764727334 in words is "twenty-one billion, seven hundred sixty-four million, seven hundred twenty-seven thousand, three hundred thirty-four".