878642936453 has 2 divisors, whose sum is σ = 878642936454. Its totient is φ = 878642936452.

The previous prime is 878642936441. The next prime is 878642936459. The reversal of 878642936453 is 354639246878.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 805601387809 + 73041548644 = 897553^2 + 270262^2 .

It is a cyclic number.

It is not a de Polignac number, because 878642936453 - 2¹⁸ = 878642674309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 878642936453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (878642936459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439321468226 + 439321468227.

It is an arithmetic number, because the mean of its divisors is an integer number (439321468227).

Almost surely, 2^878642936453 is an apocalyptic number.

It is an amenable number.

878642936453 is a deficient number, since it is larger than the sum of its proper divisors (1).

878642936453 is an equidigital number, since it uses as much as digits as its factorization.

878642936453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209018880, while the sum is 65.

The spelling of 878642936453 in words is "eight hundred seventy-eight billion, six hundred forty-two million, nine hundred thirty-six thousand, four hundred fifty-three".