16667253440 has 112 divisors (see below), whose sum is σ = 40573573920. Its totient is φ = 6519152640.

The previous prime is 16667253409. The next prime is 16667253461. The reversal of 16667253440 is 4435276661.

It is a junction number, because it is equal to n+sod(n) for n = 16667253391 and 16667253400.

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, 5612276 + ... + 5615244.

Almost surely, 2^16667253440 is an apocalyptic number.

16667253440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16667253440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20286786960).

16667253440 is an abundant number, since it is smaller than the sum of its proper divisors (23906320480).

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

16667253440 is a wasteful number, since it uses less digits than its factorization.

16667253440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370 (or 3360 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 16667253440 in words is "sixteen billion, six hundred sixty-seven million, two hundred fifty-three thousand, four hundred forty".