78503829340253 has 2 divisors, whose sum is σ = 78503829340254. Its totient is φ = 78503829340252.

The previous prime is 78503829340243. The next prime is 78503829340357. The reversal of 78503829340253 is 35204392830587.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70003794047929 + 8500035292324 = 8366827^2 + 2915482^2 .

It is an emirp because it is prime and its reverse (35204392830587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78503829340253 - 2⁸ = 78503829339997 is a prime.

It is a super-2 number, since 2×78503829340253² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78503829340192 and 78503829340201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78503829340243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39251914670126 + 39251914670127.

It is an arithmetic number, because the mean of its divisors is an integer number (39251914670127).

Almost surely, 2^{78503829340253} is an apocalyptic number.

It is an amenable number.

78503829340253 is a deficient number, since it is larger than the sum of its proper divisors (1).

78503829340253 is an equidigital number, since it uses as much as digits as its factorization.

78503829340253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43545600, while the sum is 59.

The spelling of 78503829340253 in words is "seventy-eight trillion, five hundred three billion, eight hundred twenty-nine million, three hundred forty thousand, two hundred fifty-three".