27972325393 has 2 divisors, whose sum is σ = 27972325394. Its totient is φ = 27972325392.

The previous prime is 27972325391. The next prime is 27972325429. The reversal of 27972325393 is 39352327972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27415742929 + 556582464 = 165577^2 + 23592^2 .

It is a cyclic number.

It is not a de Polignac number, because 27972325393 - 2¹ = 27972325391 is a prime.

Together with 27972325391, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 27972325393.

It is not a weakly prime, because it can be changed into another prime (27972325391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13986162696 + 13986162697.

It is an arithmetic number, because the mean of its divisors is an integer number (13986162697).

Almost surely, 2^27972325393 is an apocalyptic number.

It is an amenable number.

27972325393 is a deficient number, since it is larger than the sum of its proper divisors (1).

27972325393 is an equidigital number, since it uses as much as digits as its factorization.

27972325393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4286520, while the sum is 52.

The spelling of 27972325393 in words is "twenty-seven billion, nine hundred seventy-two million, three hundred twenty-five thousand, three hundred ninety-three".