78286198337 has 2 divisors, whose sum is σ = 78286198338. Its totient is φ = 78286198336.

The previous prime is 78286198301. The next prime is 78286198339. The reversal of 78286198337 is 73389168287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78073301056 + 212897281 = 279416^2 + 14591^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78286198337 is a prime.

It is a super-2 number, since 2×78286198337² (a number of 23 digits) contains 22 as substring.

Together with 78286198339, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78286198337.

It is not a weakly prime, because it can be changed into another prime (78286198339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39143099168 + 39143099169.

It is an arithmetic number, because the mean of its divisors is an integer number (39143099169).

Almost surely, 2^78286198337 is an apocalyptic number.

It is an amenable number.

78286198337 is a deficient number, since it is larger than the sum of its proper divisors (1).

78286198337 is an equidigital number, since it uses as much as digits as its factorization.

78286198337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24385536, while the sum is 62.

The spelling of 78286198337 in words is "seventy-eight billion, two hundred eighty-six million, one hundred ninety-eight thousand, three hundred thirty-seven".