27490775918 has 4 divisors (see below), whose sum is σ = 41236163880. Its totient is φ = 13745387958.

The previous prime is 27490775849. The next prime is 27490775927. The reversal of 27490775918 is 81957709472.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6872693978 + ... + 6872693981.

It is an arithmetic number, because the mean of its divisors is an integer number (10309040970).

Almost surely, 2^27490775918 is an apocalyptic number.

27490775918 is a deficient number, since it is larger than the sum of its proper divisors (13745387962).

27490775918 is a wasteful number, since it uses less digits than its factorization.

27490775918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13745387961.

The product of its (nonzero) digits is 8890560, while the sum is 59.

The spelling of 27490775918 in words is "twenty-seven billion, four hundred ninety million, seven hundred seventy-five thousand, nine hundred eighteen".