840452176468 has 6 divisors (see below), whose sum is σ = 1470791308826. Its totient is φ = 420226088232.

The previous prime is 840452176433. The next prime is 840452176469. The reversal of 840452176468 is 864671254048.

It can be written as a sum of positive squares in only one way, i.e., 655837586244 + 184614590224 = 809838^2 + 429668^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840452176469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105056522055 + ... + 105056522062.

Almost surely, 2^840452176468 is an apocalyptic number.

It is an amenable number.

840452176468 is a deficient number, since it is larger than the sum of its proper divisors (630339132358).

840452176468 is a wasteful number, since it uses less digits than its factorization.

840452176468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210113044121 (or 210113044119 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 55.

The spelling of 840452176468 in words is "eight hundred forty billion, four hundred fifty-two million, one hundred seventy-six thousand, four hundred sixty-eight".