133666500000 has 336 divisors, whose sum is σ = 478518249888. Its totient is φ = 32400000000.

The previous prime is 133666499983. The next prime is 133666500029. The reversal of 133666500000 is 5666331.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 16495950 + ... + 16504050.

It is an arithmetic number, because the mean of its divisors is an integer number (1424161458).

Almost surely, 2^133666500000 is an apocalyptic number.

133666500000 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 133666500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239259124944).

133666500000 is an abundant number, since it is smaller than the sum of its proper divisors (344851749888).

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

133666500000 is an frugal number, since it uses more digits than its factorization.

133666500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8155 (or 8122 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

The spelling of 133666500000 in words is "one hundred thirty-three billion, six hundred sixty-six million, five hundred thousand".