80478757339 has 2 divisors, whose sum is σ = 80478757340. Its totient is φ = 80478757338.

The previous prime is 80478757321. The next prime is 80478757379. The reversal of 80478757339 is 93375787408.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80478757339 - 2¹³ = 80478749147 is a prime.

It is not a weakly prime, because it can be changed into another prime (80478757379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40239378669 + 40239378670.

It is an arithmetic number, because the mean of its divisors is an integer number (40239378670).

Almost surely, 2^80478757339 is an apocalyptic number.

80478757339 is a deficient number, since it is larger than the sum of its proper divisors (1).

80478757339 is an equidigital number, since it uses as much as digits as its factorization.

80478757339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35562240, while the sum is 61.

The spelling of 80478757339 in words is "eighty billion, four hundred seventy-eight million, seven hundred fifty-seven thousand, three hundred thirty-nine".