80694349643 has 2 divisors, whose sum is σ = 80694349644. Its totient is φ = 80694349642.

The previous prime is 80694349607. The next prime is 80694349691. The reversal of 80694349643 is 34694349608.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80694349643 - 2³⁴ = 63514480459 is a prime.

It is not a weakly prime, because it can be changed into another prime (80694349943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40347174821 + 40347174822.

It is an arithmetic number, because the mean of its divisors is an integer number (40347174822).

Almost surely, 2^80694349643 is an apocalyptic number.

80694349643 is a deficient number, since it is larger than the sum of its proper divisors (1).

80694349643 is an equidigital number, since it uses as much as digits as its factorization.

80694349643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13436928, while the sum is 56.

The spelling of 80694349643 in words is "eighty billion, six hundred ninety-four million, three hundred forty-nine thousand, six hundred forty-three".