27664193854 has 16 divisors (see below), whose sum is σ = 45290488320. Its totient is φ = 12568575960.

The previous prime is 27664193831. The next prime is 27664193873. The reversal of 27664193854 is 45839146672.

It is a junction number, because it is equal to n+sod(n) for n = 27664193795 and 27664193804.

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, 256014 + ... + 347665.

It is an arithmetic number, because the mean of its divisors is an integer number (2830655520).

Almost surely, 2^27664193854 is an apocalyptic number.

27664193854 is a deficient number, since it is larger than the sum of its proper divisors (17626294466).

27664193854 is a wasteful number, since it uses less digits than its factorization.

27664193854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605775.

The product of its digits is 8709120, while the sum is 55.

The spelling of 27664193854 in words is "twenty-seven billion, six hundred sixty-four million, one hundred ninety-three thousand, eight hundred fifty-four".