27912319493 has 32 divisors (see below), whose sum is σ = 31037091840. Its totient is φ = 24999684480.

The previous prime is 27912319489. The next prime is 27912319529. The reversal of 27912319493 is 39491321972.

It is a cyclic number.

It is not a de Polignac number, because 27912319493 - 2² = 27912319489 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 (27912319433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4597646 + ... + 4603712.

It is an arithmetic number, because the mean of its divisors is an integer number (969909120).

Almost surely, 2^27912319493 is an apocalyptic number.

It is an amenable number.

27912319493 is a deficient number, since it is larger than the sum of its proper divisors (3124772347).

27912319493 is a wasteful number, since it uses less digits than its factorization.

27912319493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6297.

The product of its digits is 734832, while the sum is 50.

The spelling of 27912319493 in words is "twenty-seven billion, nine hundred twelve million, three hundred nineteen thousand, four hundred ninety-three".