27281274894 has 12 divisors (see below), whose sum is σ = 59109428976. Its totient is φ = 9093758292.

The previous prime is 27281274877. The next prime is 27281274959. The reversal of 27281274894 is 49847218272.

27281274894 is a `hidden beast` number, since 2 + 7 + 281 + 274 + 8 + 94 = 666.

It is a super-2 number, since 2×27281274894² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27281274894.

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, 757813174 + ... + 757813209.

It is an arithmetic number, because the mean of its divisors is an integer number (4925785748).

Almost surely, 2^27281274894 is an apocalyptic number.

27281274894 is an abundant number, since it is smaller than the sum of its proper divisors (31828154082).

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

27281274894 is a wasteful number, since it uses less digits than its factorization.

27281274894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515626391 (or 1515626388 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The spelling of 27281274894 in words is "twenty-seven billion, two hundred eighty-one million, two hundred seventy-four thousand, eight hundred ninety-four".