27640275275 has 12 divisors (see below), whose sum is σ = 34306584744. Its totient is φ = 22091160000.

The previous prime is 27640275269. The next prime is 27640275281. The reversal of 27640275275 is 57257204672.

It is an interprime number because it is at equal distance from previous prime (27640275269) and next prime (27640275281).

It is not a de Polignac number, because 27640275275 - 2⁴ = 27640275259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 499706 + ... + 552255.

It is an arithmetic number, because the mean of its divisors is an integer number (2858882062).

Almost surely, 2^27640275275 is an apocalyptic number.

27640275275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27640275275 is a deficient number, since it is larger than the sum of its proper divisors (6666309469).

27640275275 is a wasteful number, since it uses less digits than its factorization.

27640275275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053022 (or 1053017 counting only the distinct ones).

The product of its (nonzero) digits is 1646400, while the sum is 47.

The spelling of 27640275275 in words is "twenty-seven billion, six hundred forty million, two hundred seventy-five thousand, two hundred seventy-five".