78259194053 has 2 divisors, whose sum is σ = 78259194054. Its totient is φ = 78259194052.

The previous prime is 78259194029. The next prime is 78259194067. The reversal of 78259194053 is 35049195287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43131813124 + 35127380929 = 207682^2 + 187423^2 .

It is a cyclic number.

It is not a de Polignac number, because 78259194053 - 2⁸ = 78259193797 is a prime.

It is a super-2 number, since 2×78259194053² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78259193986 and 78259194004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78259194023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39129597026 + 39129597027.

It is an arithmetic number, because the mean of its divisors is an integer number (39129597027).

Almost surely, 2^78259194053 is an apocalyptic number.

It is an amenable number.

78259194053 is a deficient number, since it is larger than the sum of its proper divisors (1).

78259194053 is an equidigital number, since it uses as much as digits as its factorization.

78259194053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 78259194053 in words is "seventy-eight billion, two hundred fifty-nine million, one hundred ninety-four thousand, fifty-three".