80774036647 has 2 divisors, whose sum is σ = 80774036648. Its totient is φ = 80774036646.

The previous prime is 80774036641. The next prime is 80774036797. The reversal of 80774036647 is 74663047708.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80774036647 - 2³ = 80774036639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80774036594 and 80774036603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80774036641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40387018323 + 40387018324.

It is an arithmetic number, because the mean of its divisors is an integer number (40387018324).

Almost surely, 2^80774036647 is an apocalyptic number.

80774036647 is a deficient number, since it is larger than the sum of its proper divisors (1).

80774036647 is an equidigital number, since it uses as much as digits as its factorization.

80774036647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4741632, while the sum is 52.

The spelling of 80774036647 in words is "eighty billion, seven hundred seventy-four million, thirty-six thousand, six hundred forty-seven".