27057026993 has 2 divisors, whose sum is σ = 27057026994. Its totient is φ = 27057026992.

The previous prime is 27057026987. The next prime is 27057027043. The reversal of 27057026993 is 39962075072.

It is a happy number.

It is an a-pointer prime, because the next prime (27057027043) can be obtained adding 27057026993 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25055090944 + 2001936049 = 158288^2 + 44743^2 .

It is a cyclic number.

It is not a de Polignac number, because 27057026993 - 2¹⁸ = 27056764849 is a prime.

It is not a weakly prime, because it can be changed into another prime (27057026903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13528513496 + 13528513497.

It is an arithmetic number, because the mean of its divisors is an integer number (13528513497).

Almost surely, 2^27057026993 is an apocalyptic number.

It is an amenable number.

27057026993 is a deficient number, since it is larger than the sum of its proper divisors (1).

27057026993 is an equidigital number, since it uses as much as digits as its factorization.

27057026993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1428840, while the sum is 50.

The spelling of 27057026993 in words is "twenty-seven billion, fifty-seven million, twenty-six thousand, nine hundred ninety-three".