404627201663 has 4 divisors (see below), whose sum is σ = 404647541328. Its totient is φ = 404606862000.

The previous prime is 404627201653. The next prime is 404627201669. The reversal of 404627201663 is 366102726404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 404627201663 - 2²² = 404623007359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404627201663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404627201669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10139963 + ... + 10179788.

It is an arithmetic number, because the mean of its divisors is an integer number (101161885332).

Almost surely, 2^404627201663 is an apocalyptic number.

404627201663 is a deficient number, since it is larger than the sum of its proper divisors (20339665).

404627201663 is a wasteful number, since it uses less digits than its factorization.

404627201663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20339664.

The product of its (nonzero) digits is 290304, while the sum is 41.

The spelling of 404627201663 in words is "four hundred four billion, six hundred twenty-seven million, two hundred one thousand, six hundred sixty-three".