27280613979 has 6 divisors (see below), whose sum is σ = 39405331316. Its totient is φ = 18187075980.

The previous prime is 27280613959. The next prime is 27280613999. The reversal of 27280613979 is 97931608272.

It is an interprime number because it is at equal distance from previous prime (27280613959) and next prime (27280613999).

It is not a de Polignac number, because 27280613979 - 2⁵ = 27280613947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27280613959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1515589657 + ... + 1515589674.

Almost surely, 2^27280613979 is an apocalyptic number.

27280613979 is a deficient number, since it is larger than the sum of its proper divisors (12124717337).

27280613979 is a wasteful number, since it uses less digits than its factorization.

27280613979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031179337 (or 3031179334 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 27280613979 in words is "twenty-seven billion, two hundred eighty million, six hundred thirteen thousand, nine hundred seventy-nine".