27193996039957 has 2 divisors, whose sum is σ = 27193996039958. Its totient is φ = 27193996039956.

The previous prime is 27193996039913. The next prime is 27193996039981. The reversal of 27193996039957 is 75993069939172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25124063536881 + 2069932503076 = 5012391^2 + 1438726^2 .

It is a cyclic number.

It is not a de Polignac number, because 27193996039957 - 2⁷ = 27193996039829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27193996039997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13596998019978 + 13596998019979.

It is an arithmetic number, because the mean of its divisors is an integer number (13596998019979).

Almost surely, 2^{27193996039957} is an apocalyptic number.

It is an amenable number.

27193996039957 is a deficient number, since it is larger than the sum of its proper divisors (1).

27193996039957 is an equidigital number, since it uses as much as digits as its factorization.

27193996039957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1562436540, while the sum is 79.

The spelling of 27193996039957 in words is "twenty-seven trillion, one hundred ninety-three billion, nine hundred ninety-six million, thirty-nine thousand, nine hundred fifty-seven".