16642323633 has 32 divisors (see below), whose sum is σ = 24191104000. Its totient is φ = 10116000576.

The previous prime is 16642323623. The next prime is 16642323667. The reversal of 16642323633 is 33632324661.

It is not a de Polignac number, because 16642323633 - 2⁴ = 16642323617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16642323591 and 16642323600.

It is not an unprimeable number, because it can be changed into a prime (16642323623) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1071066 + ... + 1086492.

It is an arithmetic number, because the mean of its divisors is an integer number (755972000).

Almost surely, 2^16642323633 is an apocalyptic number.

16642323633 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16642323633 is a deficient number, since it is larger than the sum of its proper divisors (7548780367).

16642323633 is a wasteful number, since it uses less digits than its factorization.

16642323633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15781.

The product of its digits is 279936, while the sum is 39.

The spelling of 16642323633 in words is "sixteen billion, six hundred forty-two million, three hundred twenty-three thousand, six hundred thirty-three".