27775427758 has 16 divisors (see below), whose sum is σ = 45628475760. Its totient is φ = 12602149056.

The previous prime is 27775427677. The next prime is 27775427777. The reversal of 27775427758 is 85772457772.

It is a happy number.

27775427758 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 27775427696 and 27775427705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9051735 + ... + 9054802.

It is an arithmetic number, because the mean of its divisors is an integer number (2851779735).

Almost surely, 2^27775427758 is an apocalyptic number.

27775427758 is a deficient number, since it is larger than the sum of its proper divisors (17853048002).

27775427758 is a wasteful number, since it uses less digits than its factorization.

27775427758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18106611.

The product of its digits is 53782400, while the sum is 61.

The spelling of 27775427758 in words is "twenty-seven billion, seven hundred seventy-five million, four hundred twenty-seven thousand, seven hundred fifty-eight".