78286198339 has 2 divisors, whose sum is σ = 78286198340. Its totient is φ = 78286198338.

The previous prime is 78286198337. The next prime is 78286198343. The reversal of 78286198339 is 93389168287.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78286198339 - 2¹ = 78286198337 is a prime.

It is a super-2 number, since 2×78286198339² (a number of 23 digits) contains 22 as substring.

Together with 78286198337, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (78286198337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39143099169 + 39143099170.

It is an arithmetic number, because the mean of its divisors is an integer number (39143099170).

Almost surely, 2^78286198339 is an apocalyptic number.

78286198339 is a deficient number, since it is larger than the sum of its proper divisors (1).

78286198339 is an equidigital number, since it uses as much as digits as its factorization.

78286198339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 64.

The spelling of 78286198339 in words is "seventy-eight billion, two hundred eighty-six million, one hundred ninety-eight thousand, three hundred thirty-nine".