78597803357 has 2 divisors, whose sum is σ = 78597803358. Its totient is φ = 78597803356.

The previous prime is 78597803327. The next prime is 78597803359. The reversal of 78597803357 is 75330879587.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54903050596 + 23694752761 = 234314^2 + 153931^2 .

It is a cyclic number.

It is not a de Polignac number, because 78597803357 - 2⁶ = 78597803293 is a prime.

It is a super-2 number, since 2×78597803357² (a number of 23 digits) contains 22 as substring.

Together with 78597803359, 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 78597803357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78597803359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39298901678 + 39298901679.

It is an arithmetic number, because the mean of its divisors is an integer number (39298901679).

Almost surely, 2^78597803357 is an apocalyptic number.

It is an amenable number.

78597803357 is a deficient number, since it is larger than the sum of its proper divisors (1).

78597803357 is an equidigital number, since it uses as much as digits as its factorization.

78597803357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44452800, while the sum is 62.

The spelling of 78597803357 in words is "seventy-eight billion, five hundred ninety-seven million, eight hundred three thousand, three hundred fifty-seven".