27945396371 has 8 divisors (see below), whose sum is σ = 28827120720. Its totient is φ = 27070327008.

The previous prime is 27945396361. The next prime is 27945396373. The reversal of 27945396371 is 17369354972.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27945396371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27945396373) 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, 1655216 + ... + 1672013.

It is an arithmetic number, because the mean of its divisors is an integer number (3603390090).

Almost surely, 2^27945396371 is an apocalyptic number.

27945396371 is a deficient number, since it is larger than the sum of its proper divisors (881724349).

27945396371 is a wasteful number, since it uses less digits than its factorization.

27945396371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327493.

The product of its digits is 8573040, while the sum is 56.

The spelling of 27945396371 in words is "twenty-seven billion, nine hundred forty-five million, three hundred ninety-six thousand, three hundred seventy-one".