16631143004 has 48 divisors (see below), whose sum is σ = 36142417920. Its totient is φ = 6534665280.

The previous prime is 16631142991. The next prime is 16631143031. The reversal of 16631143004 is 40034113661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 487727 + ... + 520710.

It is an arithmetic number, because the mean of its divisors is an integer number (752967040).

Almost surely, 2^16631143004 is an apocalyptic number.

16631143004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16631143004 is an abundant number, since it is smaller than the sum of its proper divisors (19511274916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16631143004 is a wasteful number, since it uses less digits than its factorization.

16631143004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008498 (or 1008496 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 16631143004 its reverse (40034113661), we get a palindrome (56665256665).

The spelling of 16631143004 in words is "sixteen billion, six hundred thirty-one million, one hundred forty-three thousand, four".