78294550963513 has 2 divisors, whose sum is σ = 78294550963514. Its totient is φ = 78294550963512.

The previous prime is 78294550963507. The next prime is 78294550963523. The reversal of 78294550963513 is 31536905549287.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62568226560064 + 15726324403449 = 7910008^2 + 3965643^2 .

It is a cyclic number.

It is not a de Polignac number, because 78294550963513 - 2³⁷ = 78157112010041 is a prime.

It is a super-2 number, since 2×78294550963513² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78294550963523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39147275481756 + 39147275481757.

It is an arithmetic number, because the mean of its divisors is an integer number (39147275481757).

It is a 1-persistent number, because it is pandigital, but 2⋅78294550963513 = 156589101927026 is not.

Almost surely, 2^{78294550963513} is an apocalyptic number.

It is an amenable number.

78294550963513 is a deficient number, since it is larger than the sum of its proper divisors (1).

78294550963513 is an equidigital number, since it uses as much as digits as its factorization.

78294550963513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944000, while the sum is 67.

The spelling of 78294550963513 in words is "seventy-eight trillion, two hundred ninety-four billion, five hundred fifty million, nine hundred sixty-three thousand, five hundred thirteen".