27960894497 has 4 divisors (see below), whose sum is σ = 28222211376. Its totient is φ = 27699577620.

The previous prime is 27960894463. The next prime is 27960894547. The reversal of 27960894497 is 79449806972.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27960894497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27960894407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130658279 + ... + 130658492.

It is an arithmetic number, because the mean of its divisors is an integer number (7055552844).

Almost surely, 2^27960894497 is an apocalyptic number.

It is an amenable number.

27960894497 is a deficient number, since it is larger than the sum of its proper divisors (261316879).

27960894497 is a wasteful number, since it uses less digits than its factorization.

27960894497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261316878.

The product of its (nonzero) digits is 54867456, while the sum is 65.

The spelling of 27960894497 in words is "twenty-seven billion, nine hundred sixty million, eight hundred ninety-four thousand, four hundred ninety-seven".