21792827489 has 8 divisors (see below), whose sum is σ = 21831492480. Its totient is φ = 21754198800.

The previous prime is 21792827479. The next prime is 21792827501. The reversal of 21792827489 is 98472829712.

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

It is a cyclic number.

It is not a de Polignac number, because 21792827489 - 2²⁴ = 21776050273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21792827429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1372184 + ... + 1387974.

It is an arithmetic number, because the mean of its divisors is an integer number (2728936560).

Almost surely, 2^21792827489 is an apocalyptic number.

It is an amenable number.

21792827489 is a deficient number, since it is larger than the sum of its proper divisors (38664991).

21792827489 is a wasteful number, since it uses less digits than its factorization.

21792827489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18151.

The product of its digits is 8128512, while the sum is 59.

The spelling of 21792827489 in words is "twenty-one billion, seven hundred ninety-two million, eight hundred twenty-seven thousand, four hundred eighty-nine".