27869457493 has 4 divisors (see below), whose sum is σ = 28036340640. Its totient is φ = 27702574348.

The previous prime is 27869457491. The next prime is 27869457527. The reversal of 27869457493 is 39475496872.

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 not a de Polignac number, because 27869457493 - 2¹ = 27869457491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27869457491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83441323 + ... + 83441656.

It is an arithmetic number, because the mean of its divisors is an integer number (7009085160).

Almost surely, 2^27869457493 is an apocalyptic number.

It is an amenable number.

27869457493 is a deficient number, since it is larger than the sum of its proper divisors (166883147).

27869457493 is a wasteful number, since it uses less digits than its factorization.

27869457493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166883146.

The product of its digits is 91445760, while the sum is 64.

The spelling of 27869457493 in words is "twenty-seven billion, eight hundred sixty-nine million, four hundred fifty-seven thousand, four hundred ninety-three".