16639657152 has 28 divisors (see below), whose sum is σ = 44025760056. Its totient is φ = 5546552320.

The previous prime is 16639657147. The next prime is 16639657159. The reversal of 16639657152 is 25175693661.

16639657152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16639657152² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16639657095 and 16639657104.

It is not an unprimeable number, because it can be changed into a prime (16639657159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43332249 + ... + 43332632.

Almost surely, 2^16639657152 is an apocalyptic number.

16639657152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16639657152 is an abundant number, since it is smaller than the sum of its proper divisors (27386102904).

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

16639657152 is an equidigital number, since it uses as much as digits as its factorization.

16639657152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86664896 (or 86664886 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 51.

The spelling of 16639657152 in words is "sixteen billion, six hundred thirty-nine million, six hundred fifty-seven thousand, one hundred fifty-two".