27478105859 has 2 divisors, whose sum is σ = 27478105860. Its totient is φ = 27478105858.

The previous prime is 27478105847. The next prime is 27478105867. The reversal of 27478105859 is 95850187472.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27478105859 is a prime.

It is not a weakly prime, because it can be changed into another prime (27478102859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13739052929 + 13739052930.

It is an arithmetic number, because the mean of its divisors is an integer number (13739052930).

Almost surely, 2^27478105859 is an apocalyptic number.

27478105859 is a deficient number, since it is larger than the sum of its proper divisors (1).

27478105859 is an equidigital number, since it uses as much as digits as its factorization.

27478105859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5644800, while the sum is 56.

The spelling of 27478105859 in words is "twenty-seven billion, four hundred seventy-eight million, one hundred five thousand, eight hundred fifty-nine".