16666550000 has 60 divisors (see below), whose sum is σ = 40361838552. Its totient is φ = 6666600000.

The previous prime is 16666549993. The next prime is 16666550027. The reversal of 16666550000 is 5566661.

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, 116666 + ... + 216665.

Almost surely, 2^16666550000 is an apocalyptic number.

16666550000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16666550000 is an abundant number, since it is smaller than the sum of its proper divisors (23695288552).

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

16666550000 is an frugal number, since it uses more digits than its factorization.

16666550000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333364 (or 333338 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 16666550000 in words is "sixteen billion, six hundred sixty-six million, five hundred fifty thousand".