404543113544431 has 16 divisors (see below), whose sum is σ = 415563236457408. Its totient is φ = 393527552601600.

The previous prime is 404543113544407. The next prime is 404543113544543. The reversal of 404543113544431 is 134445311345404.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 404543113544431 - 2¹¹ = 404543113542383 is a prime.

It is a super-2 number, since 2×404543113544431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404543113547431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4685368321 + ... + 4685454661.

It is an arithmetic number, because the mean of its divisors is an integer number (25972702278588).

Almost surely, 2^{404543113544431} is an apocalyptic number.

404543113544431 is a deficient number, since it is larger than the sum of its proper divisors (11020122912977).

404543113544431 is a wasteful number, since it uses less digits than its factorization.

404543113544431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111282.

The product of its (nonzero) digits is 2764800, while the sum is 46.

Adding to 404543113544431 its reverse (134445311345404), we get a palindrome (538988424889835).

The spelling of 404543113544431 in words is "four hundred four trillion, five hundred forty-three billion, one hundred thirteen million, five hundred forty-four thousand, four hundred thirty-one".