78298995457259 has 2 divisors, whose sum is σ = 78298995457260. Its totient is φ = 78298995457258.

The previous prime is 78298995457231. The next prime is 78298995457261. The reversal of 78298995457259 is 95275459989287.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78298995457259 - 2²⁸ = 78298727021803 is a prime.

It is a super-2 number, since 2×78298995457259² (a number of 29 digits) contains 22 as substring.

Together with 78298995457261, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78298995457219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39149497728629 + 39149497728630.

It is an arithmetic number, because the mean of its divisors is an integer number (39149497728630).

Almost surely, 2^{78298995457259} is an apocalyptic number.

78298995457259 is a deficient number, since it is larger than the sum of its proper divisors (1).

78298995457259 is an equidigital number, since it uses as much as digits as its factorization.

78298995457259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41150592000, while the sum is 89.

The spelling of 78298995457259 in words is "seventy-eight trillion, two hundred ninety-eight billion, nine hundred ninety-five million, four hundred fifty-seven thousand, two hundred fifty-nine".