404621836851 has 8 divisors (see below), whose sum is σ = 539499939264. Its totient is φ = 269745812840.

The previous prime is 404621836847. The next prime is 404621836859. The reversal of 404621836851 is 158638126404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 404621836851 - 2² = 404621836847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404621836851.

It is not an unprimeable number, because it can be changed into a prime (404621836859) 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, 12496 + ... + 899666.

It is an arithmetic number, because the mean of its divisors is an integer number (67437492408).

Almost surely, 2^404621836851 is an apocalyptic number.

404621836851 is a deficient number, since it is larger than the sum of its proper divisors (134878102413).

404621836851 is a wasteful number, since it uses less digits than its factorization.

404621836851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039201.

The product of its (nonzero) digits is 1105920, while the sum is 48.

The spelling of 404621836851 in words is "four hundred four billion, six hundred twenty-one million, eight hundred thirty-six thousand, eight hundred fifty-one".