27797487894 has 48 divisors (see below), whose sum is σ = 66628583424. Its totient is φ = 8304836400.

The previous prime is 27797487881. The next prime is 27797487947. The reversal of 27797487894 is 49878479772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 974614 + ... + 1002729.

It is an arithmetic number, because the mean of its divisors is an integer number (1388095488).

Almost surely, 2^27797487894 is an apocalyptic number.

27797487894 is an abundant number, since it is smaller than the sum of its proper divisors (38831095530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27797487894 is a wasteful number, since it uses less digits than its factorization.

27797487894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977433 (or 1977430 counting only the distinct ones).

The product of its digits is 398297088, while the sum is 72.

The spelling of 27797487894 in words is "twenty-seven billion, seven hundred ninety-seven million, four hundred eighty-seven thousand, eight hundred ninety-four".