16668029140 has 36 divisors (see below), whose sum is σ = 40717616436. Its totient is φ = 5714752512.

The previous prime is 16668029089. The next prime is 16668029173. The reversal of 16668029140 is 4192086661.

It can be written as a sum of positive squares in 2 ways, for example, as 11687339664 + 4980689476 = 108108^2 + 70574^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8503117 + ... + 8505076.

It is an arithmetic number, because the mean of its divisors is an integer number (1131044901).

Almost surely, 2^16668029140 is an apocalyptic number.

16668029140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16668029140 is an abundant number, since it is smaller than the sum of its proper divisors (24049587296).

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

16668029140 is a wasteful number, since it uses less digits than its factorization.

16668029140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17008216 (or 17008207 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 16668029140 in words is "sixteen billion, six hundred sixty-eight million, twenty-nine thousand, one hundred forty".