84680264491 has 2 divisors, whose sum is σ = 84680264492. Its totient is φ = 84680264490.

The previous prime is 84680264443. The next prime is 84680264503. The reversal of 84680264491 is 19446208648.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84680264491 is a prime.

It is not a weakly prime, because it can be changed into another prime (84680264401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42340132245 + 42340132246.

It is an arithmetic number, because the mean of its divisors is an integer number (42340132246).

Almost surely, 2^84680264491 is an apocalyptic number.

84680264491 is a deficient number, since it is larger than the sum of its proper divisors (1).

84680264491 is an equidigital number, since it uses as much as digits as its factorization.

84680264491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2654208, while the sum is 52.

The spelling of 84680264491 in words is "eighty-four billion, six hundred eighty million, two hundred sixty-four thousand, four hundred ninety-one".