133386661812 has 24 divisors (see below), whose sum is σ = 314144290656. Its totient is φ = 44046685408.

The previous prime is 133386661777. The next prime is 133386661831. The reversal of 133386661812 is 218166683331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51940563 + ... + 51943130.

It is an arithmetic number, because the mean of its divisors is an integer number (13089345444).

Almost surely, 2^133386661812 is an apocalyptic number.

133386661812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133386661812 is an abundant number, since it is smaller than the sum of its proper divisors (180757628844).

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

133386661812 is a wasteful number, since it uses less digits than its factorization.

133386661812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103883807 (or 103883805 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The spelling of 133386661812 in words is "one hundred thirty-three billion, three hundred eighty-six million, six hundred sixty-one thousand, eight hundred twelve".