78298322351 has 2 divisors, whose sum is σ = 78298322352. Its totient is φ = 78298322350.

The previous prime is 78298322293. The next prime is 78298322357. The reversal of 78298322351 is 15322389287.

It is a strong prime.

It is an emirp because it is prime and its reverse (15322389287) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78298322351 - 2⁶ = 78298322287 is a prime.

It is a super-2 number, since 2×78298322351² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78298322351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78298322357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39149161175 + 39149161176.

It is an arithmetic number, because the mean of its divisors is an integer number (39149161176).

Almost surely, 2^78298322351 is an apocalyptic number.

78298322351 is a deficient number, since it is larger than the sum of its proper divisors (1).

78298322351 is an equidigital number, since it uses as much as digits as its factorization.

78298322351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 50.

The spelling of 78298322351 in words is "seventy-eight billion, two hundred ninety-eight million, three hundred twenty-two thousand, three hundred fifty-one".