27721661132 has 12 divisors (see below), whose sum is σ = 52923171336. Its totient is φ = 12600755040.

The previous prime is 27721661087. The next prime is 27721661141. The reversal of 27721661132 is 23116612772.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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, 315018833 + ... + 315018920.

It is an arithmetic number, because the mean of its divisors is an integer number (4410264278).

Almost surely, 2^27721661132 is an apocalyptic number.

27721661132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

27721661132 is a deficient number, since it is larger than the sum of its proper divisors (25201510204).

27721661132 is a wasteful number, since it uses less digits than its factorization.

27721661132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630037768 (or 630037766 counting only the distinct ones).

The product of its digits is 42336, while the sum is 38.

The spelling of 27721661132 in words is "twenty-seven billion, seven hundred twenty-one million, six hundred sixty-one thousand, one hundred thirty-two".