27640250275 has 24 divisors (see below), whose sum is σ = 39589122384. Its totient is φ = 18919526400.

The previous prime is 27640250249. The next prime is 27640250279. The reversal of 27640250275 is 57205204672.

It is not a de Polignac number, because 27640250275 - 2⁷ = 27640250147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27640250279) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2951502 + ... + 2960851.

It is an arithmetic number, because the mean of its divisors is an integer number (1649546766).

Almost surely, 2^27640250275 is an apocalyptic number.

27640250275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27640250275 is a deficient number, since it is larger than the sum of its proper divisors (11948872109).

27640250275 is a wasteful number, since it uses less digits than its factorization.

27640250275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5912391 (or 5912386 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 40.

The spelling of 27640250275 in words is "twenty-seven billion, six hundred forty million, two hundred fifty thousand, two hundred seventy-five".