133836118820 has 24 divisors (see below), whose sum is σ = 290747431800. Its totient is φ = 51688431872.

The previous prime is 133836118813. The next prime is 133836118831. The reversal of 133836118820 is 28811638331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19068295744 + 114767823076 = 138088^2 + 338774^2 .

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, 115375385 + ... + 115376544.

It is an arithmetic number, because the mean of its divisors is an integer number (12114476325).

Almost surely, 2^133836118820 is an apocalyptic number.

133836118820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133836118820 is an abundant number, since it is smaller than the sum of its proper divisors (156911312980).

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

133836118820 is a wasteful number, since it uses less digits than its factorization.

133836118820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230751967 (or 230751965 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 133836118820 in words is "one hundred thirty-three billion, eight hundred thirty-six million, one hundred eighteen thousand, eight hundred twenty".