16531233420404 has 48 divisors (see below), whose sum is σ = 31202386669440. Its totient is φ = 7644824077440.

The previous prime is 16531233420367. The next prime is 16531233420439. The reversal of 16531233420404 is 40402433213561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24632399 + ... + 25294614.

It is an arithmetic number, because the mean of its divisors is an integer number (650049722280).

Almost surely, 2^{16531233420404} is an apocalyptic number.

It is an amenable number.

16531233420404 is a deficient number, since it is larger than the sum of its proper divisors (14671153249036).

16531233420404 is a wasteful number, since it uses less digits than its factorization.

16531233420404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49927160 (or 49927158 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

Adding to 16531233420404 its reverse (40402433213561), we get a palindrome (56933666633965).

The spelling of 16531233420404 in words is "sixteen trillion, five hundred thirty-one billion, two hundred thirty-three million, four hundred twenty thousand, four hundred four".