27639027775 has 6 divisors (see below), whose sum is σ = 34272394472. Its totient is φ = 22111222200.

The previous prime is 27639027743. The next prime is 27639027781. The reversal of 27639027775 is 57772093672.

It is not a de Polignac number, because 27639027775 - 2⁵ = 27639027743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 552780531 + ... + 552780580.

Almost surely, 2^27639027775 is an apocalyptic number.

27639027775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27639027775 is a deficient number, since it is larger than the sum of its proper divisors (6633366697).

27639027775 is a wasteful number, since it uses less digits than its factorization.

27639027775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105561121 (or 1105561116 counting only the distinct ones).

The product of its (nonzero) digits is 7779240, while the sum is 55.

The spelling of 27639027775 in words is "twenty-seven billion, six hundred thirty-nine million, twenty-seven thousand, seven hundred seventy-five".