16631423424 has 168 divisors, whose sum is σ = 59434098048. Its totient is φ = 4319838720.

The previous prime is 16631423371. The next prime is 16631423449. The reversal of 16631423424 is 42432413661.

16631423424 is a `hidden beast` number, since 16 + 631 + 4 + 2 + 3 + 4 + 2 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143142 + ... + 231845.

Almost surely, 2^16631423424 is an apocalyptic number.

16631423424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16631423424 is an abundant number, since it is smaller than the sum of its proper divisors (42802674624).

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

16631423424 is a wasteful number, since it uses less digits than its factorization.

16631423424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375023 (or 375010 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The spelling of 16631423424 in words is "sixteen billion, six hundred thirty-one million, four hundred twenty-three thousand, four hundred twenty-four".