16668350140 has 24 divisors (see below), whose sum is σ = 37696115520. Its totient is φ = 6154467648.

The previous prime is 16668350071. The next prime is 16668350141. The reversal of 16668350140 is 4105386661.

It is a junction number, because it is equal to n+sod(n) for n = 16668350093 and 16668350102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16668350141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32054260 + ... + 32054779.

It is an arithmetic number, because the mean of its divisors is an integer number (1570671480).

Almost surely, 2^16668350140 is an apocalyptic number.

16668350140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16668350140 is an abundant number, since it is smaller than the sum of its proper divisors (21027765380).

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

16668350140 is a wasteful number, since it uses less digits than its factorization.

16668350140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64109061 (or 64109059 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 16668350140 in words is "sixteen billion, six hundred sixty-eight million, three hundred fifty thousand, one hundred forty".