986568404491 has 2 divisors, whose sum is σ = 986568404492. Its totient is φ = 986568404490.

The previous prime is 986568404399. The next prime is 986568404539. The reversal of 986568404491 is 194404865689.

986568404491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 986568404491 - 2¹³ = 986568396299 is a prime.

It is not a weakly prime, because it can be changed into another prime (986568474491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493284202245 + 493284202246.

It is an arithmetic number, because the mean of its divisors is an integer number (493284202246).

Almost surely, 2^986568404491 is an apocalyptic number.

986568404491 is a deficient number, since it is larger than the sum of its proper divisors (1).

986568404491 is an equidigital number, since it uses as much as digits as its factorization.

986568404491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 59719680, while the sum is 64.

The spelling of 986568404491 in words is "nine hundred eighty-six billion, five hundred sixty-eight million, four hundred four thousand, four hundred ninety-one".