27731327775 has 48 divisors (see below), whose sum is σ = 48917011968. Its totient is φ = 13813696000.

The previous prime is 27731327761. The next prime is 27731327837. The reversal of 27731327775 is 57772313772.

It is not a de Polignac number, because 27731327775 - 2⁷ = 27731327647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84010 + ... + 250040.

It is an arithmetic number, because the mean of its divisors is an integer number (1019104416).

Almost surely, 2^27731327775 is an apocalyptic number.

27731327775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27731327775 is a deficient number, since it is larger than the sum of its proper divisors (21185684193).

27731327775 is a wasteful number, since it uses less digits than its factorization.

27731327775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166192 (or 166187 counting only the distinct ones).

The product of its digits is 3025260, while the sum is 51.

The spelling of 27731327775 in words is "twenty-seven billion, seven hundred thirty-one million, three hundred twenty-seven thousand, seven hundred seventy-five".