27809131232 has 36 divisors (see below), whose sum is σ = 55134787176. Its totient is φ = 13806724800.

The previous prime is 27809131223. The next prime is 27809131241. The reversal of 27809131232 is 23213190872.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27809131223) and next prime (27809131241).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11590769 + ... + 11593167.

It is an arithmetic number, because the mean of its divisors is an integer number (1531521866).

Almost surely, 2^27809131232 is an apocalyptic number.

It is an amenable number.

27809131232 is a deficient number, since it is larger than the sum of its proper divisors (27325655944).

27809131232 is an frugal number, since it uses more digits than its factorization.

27809131232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4959 (or 2552 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 27809131232 in words is "twenty-seven billion, eight hundred nine million, one hundred thirty-one thousand, two hundred thirty-two".