27958618907 has 2 divisors, whose sum is σ = 27958618908. Its totient is φ = 27958618906.

The previous prime is 27958618859. The next prime is 27958618927. The reversal of 27958618907 is 70981685972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27958618907 - 2⁶ = 27958618843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27958618907.

It is not a weakly prime, because it can be changed into another prime (27958618927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13979309453 + 13979309454.

It is an arithmetic number, because the mean of its divisors is an integer number (13979309454).

Almost surely, 2^27958618907 is an apocalyptic number.

27958618907 is a deficient number, since it is larger than the sum of its proper divisors (1).

27958618907 is an equidigital number, since it uses as much as digits as its factorization.

27958618907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 62.

The spelling of 27958618907 in words is "twenty-seven billion, nine hundred fifty-eight million, six hundred eighteen thousand, nine hundred seven".