862783778453 has 2 divisors, whose sum is σ = 862783778454. Its totient is φ = 862783778452.

The previous prime is 862783778401. The next prime is 862783778471. The reversal of 862783778453 is 354877387268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 657399883204 + 205383895249 = 810802^2 + 453193^2 .

It is a cyclic number.

It is not a de Polignac number, because 862783778453 - 2¹⁴ = 862783762069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (862783778653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431391889226 + 431391889227.

It is an arithmetic number, because the mean of its divisors is an integer number (431391889227).

Almost surely, 2^862783778453 is an apocalyptic number.

It is an amenable number.

862783778453 is a deficient number, since it is larger than the sum of its proper divisors (1).

862783778453 is an equidigital number, since it uses as much as digits as its factorization.

862783778453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 379330560, while the sum is 68.

The spelling of 862783778453 in words is "eight hundred sixty-two billion, seven hundred eighty-three million, seven hundred seventy-eight thousand, four hundred fifty-three".