27797732505 has 24 divisors (see below), whose sum is σ = 48451927680. Its totient is φ = 14742629280.

The previous prime is 27797732453. The next prime is 27797732527. The reversal of 27797732505 is 50523779772.

It is not a de Polignac number, because 27797732505 - 2¹⁵ = 27797699737 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1717441 + ... + 1733550.

It is an arithmetic number, because the mean of its divisors is an integer number (2018830320).

Almost surely, 2^27797732505 is an apocalyptic number.

It is an amenable number.

27797732505 is a deficient number, since it is larger than the sum of its proper divisors (20654195175).

27797732505 is a wasteful number, since it uses less digits than its factorization.

27797732505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451181 (or 3451178 counting only the distinct ones).

The product of its (nonzero) digits is 6482700, while the sum is 54.

The spelling of 27797732505 in words is "twenty-seven billion, seven hundred ninety-seven million, seven hundred thirty-two thousand, five hundred five".