78453785419753 has 2 divisors, whose sum is σ = 78453785419754. Its totient is φ = 78453785419752.

The previous prime is 78453785419739. The next prime is 78453785419873. The reversal of 78453785419753 is 35791458735487.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75990743949289 + 2463041470464 = 8717267^2 + 1569408^2 .

It is a cyclic number.

It is not a de Polignac number, because 78453785419753 - 2⁵ = 78453785419721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78453785419753.

It is not a weakly prime, because it can be changed into another prime (78453785419733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39226892709876 + 39226892709877.

It is an arithmetic number, because the mean of its divisors is an integer number (39226892709877).

Almost surely, 2^{78453785419753} is an apocalyptic number.

It is an amenable number.

78453785419753 is a deficient number, since it is larger than the sum of its proper divisors (1).

78453785419753 is an equidigital number, since it uses as much as digits as its factorization.

78453785419753 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224000, while the sum is 76.

The spelling of 78453785419753 in words is "seventy-eight trillion, four hundred fifty-three billion, seven hundred eighty-five million, four hundred nineteen thousand, seven hundred fifty-three".