27390929087 has 2 divisors, whose sum is σ = 27390929088. Its totient is φ = 27390929086.

The previous prime is 27390929063. The next prime is 27390929107. The reversal of 27390929087 is 78092909372.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27390929087 - 2¹⁸ = 27390666943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27390929047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13695464543 + 13695464544.

It is an arithmetic number, because the mean of its divisors is an integer number (13695464544).

Almost surely, 2^27390929087 is an apocalyptic number.

27390929087 is a deficient number, since it is larger than the sum of its proper divisors (1).

27390929087 is an equidigital number, since it uses as much as digits as its factorization.

27390929087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3429216, while the sum is 56.

The spelling of 27390929087 in words is "twenty-seven billion, three hundred ninety million, nine hundred twenty-nine thousand, eighty-seven".