27670637453 has 2 divisors, whose sum is σ = 27670637454. Its totient is φ = 27670637452.

The previous prime is 27670637429. The next prime is 27670637473. The reversal of 27670637453 is 35473607672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21101048644 + 6569588809 = 145262^2 + 81053^2 .

It is a cyclic number.

It is not a de Polignac number, because 27670637453 - 2¹² = 27670633357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27670637473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13835318726 + 13835318727.

It is an arithmetic number, because the mean of its divisors is an integer number (13835318727).

Almost surely, 2^27670637453 is an apocalyptic number.

It is an amenable number.

27670637453 is a deficient number, since it is larger than the sum of its proper divisors (1).

27670637453 is an equidigital number, since it uses as much as digits as its factorization.

27670637453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4445280, while the sum is 50.

The spelling of 27670637453 in words is "twenty-seven billion, six hundred seventy million, six hundred thirty-seven thousand, four hundred fifty-three".