27992222646 has 32 divisors (see below), whose sum is σ = 58834710528. Its totient is φ = 8867426400.

The previous prime is 27992222623. The next prime is 27992222681. The reversal of 27992222646 is 64622229972.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1456630 + ... + 1475721.

It is an arithmetic number, because the mean of its divisors is an integer number (1838584704).

Almost surely, 2^27992222646 is an apocalyptic number.

27992222646 is an abundant number, since it is smaller than the sum of its proper divisors (30842487882).

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

27992222646 is a wasteful number, since it uses less digits than its factorization.

27992222646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2932436.

The product of its digits is 2612736, while the sum is 51.

The spelling of 27992222646 in words is "twenty-seven billion, nine hundred ninety-two million, two hundred twenty-two thousand, six hundred forty-six".