78562256453 has 2 divisors, whose sum is σ = 78562256454. Its totient is φ = 78562256452.

The previous prime is 78562256449. The next prime is 78562256467. The reversal of 78562256453 is 35465226587.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71472279649 + 7089976804 = 267343^2 + 84202^2 .

It is a cyclic number.

It is not a de Polignac number, because 78562256453 - 2² = 78562256449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78562256395 and 78562256404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78562256653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39281128226 + 39281128227.

It is an arithmetic number, because the mean of its divisors is an integer number (39281128227).

Almost surely, 2^78562256453 is an apocalyptic number.

It is an amenable number.

78562256453 is a deficient number, since it is larger than the sum of its proper divisors (1).

78562256453 is an equidigital number, since it uses as much as digits as its factorization.

78562256453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096000, while the sum is 53.

The spelling of 78562256453 in words is "seventy-eight billion, five hundred sixty-two million, two hundred fifty-six thousand, four hundred fifty-three".