80149740709 has 2 divisors, whose sum is σ = 80149740710. Its totient is φ = 80149740708.

The previous prime is 80149740691. The next prime is 80149740851. The reversal of 80149740709 is 90704794108.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80030712609 + 119028100 = 282897^2 + 10910^2 .

It is a cyclic number.

It is not a de Polignac number, because 80149740709 - 2¹⁷ = 80149609637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80149720709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40074870354 + 40074870355.

It is an arithmetic number, because the mean of its divisors is an integer number (40074870355).

Almost surely, 2^80149740709 is an apocalyptic number.

It is an amenable number.

80149740709 is a deficient number, since it is larger than the sum of its proper divisors (1).

80149740709 is an equidigital number, since it uses as much as digits as its factorization.

80149740709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 80149740709 in words is "eighty billion, one hundred forty-nine million, seven hundred forty thousand, seven hundred nine".