404253645164 has 24 divisors (see below), whose sum is σ = 726984816768. Its totient is φ = 196574802560.

The previous prime is 404253645163. The next prime is 404253645227. The reversal of 404253645164 is 461546352404.

It is not an unprimeable number, because it can be changed into a prime (404253645161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3835964 + ... + 3939939.

It is an arithmetic number, because the mean of its divisors is an integer number (30291034032).

Almost surely, 2^404253645164 is an apocalyptic number.

It is an amenable number.

404253645164 is a deficient number, since it is larger than the sum of its proper divisors (322731171604).

404253645164 is a wasteful number, since it uses less digits than its factorization.

404253645164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7776265 (or 7776263 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 44.

Adding to 404253645164 its reverse (461546352404), we get a palindrome (865799997568).

The spelling of 404253645164 in words is "four hundred four billion, two hundred fifty-three million, six hundred forty-five thousand, one hundred sixty-four".