27278884992 has 64 divisors (see below), whose sum is σ = 74796975360. Its totient is φ = 8799636480.

The previous prime is 27278884987. The next prime is 27278884999. The reversal of 27278884992 is 29948887272.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (27278884999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1133883 + ... + 1157690.

It is an arithmetic number, because the mean of its divisors is an integer number (1168702740).

Almost surely, 2^27278884992 is an apocalyptic number.

It is an amenable number.

27278884992 is an abundant number, since it is smaller than the sum of its proper divisors (47518090368).

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

27278884992 is a wasteful number, since it uses less digits than its factorization.

27278884992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291621 (or 2291609 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 66.

The spelling of 27278884992 in words is "twenty-seven billion, two hundred seventy-eight million, eight hundred eighty-four thousand, nine hundred ninety-two".