27878765275 has 12 divisors (see below), whose sum is σ = 34745155632. Its totient is φ = 22189795040.

The previous prime is 27878765251. The next prime is 27878765309. The reversal of 27878765275 is 57256787872.

It is not a de Polignac number, because 27878765275 - 2³¹ = 25731281627 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, 2825407 + ... + 2835256.

It is an arithmetic number, because the mean of its divisors is an integer number (2895429636).

Almost surely, 2^27878765275 is an apocalyptic number.

27878765275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27878765275 is a deficient number, since it is larger than the sum of its proper divisors (6866390357).

27878765275 is a wasteful number, since it uses less digits than its factorization.

27878765275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5660870 (or 5660865 counting only the distinct ones).

The product of its digits is 92198400, while the sum is 64.

The spelling of 27878765275 in words is "twenty-seven billion, eight hundred seventy-eight million, seven hundred sixty-five thousand, two hundred seventy-five".