27439564497 has 8 divisors (see below), whose sum is σ = 36601737120. Its totient is φ = 18285217440.

The previous prime is 27439564463. The next prime is 27439564507. The reversal of 27439564497 is 79446593472.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27439564497 - 2²⁷ = 27305346769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27439564497.

It is not an unprimeable number, because it can be changed into a prime (27439564447) 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, 1948204 + ... + 1962237.

It is an arithmetic number, because the mean of its divisors is an integer number (4575217140).

Almost surely, 2^27439564497 is an apocalyptic number.

It is an amenable number.

27439564497 is a deficient number, since it is larger than the sum of its proper divisors (9162172623).

27439564497 is a wasteful number, since it uses less digits than its factorization.

27439564497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3912783.

The product of its digits is 45722880, while the sum is 60.

The spelling of 27439564497 in words is "twenty-seven billion, four hundred thirty-nine million, five hundred sixty-four thousand, four hundred ninety-seven".