133909111620 has 144 divisors (see below), whose sum is σ = 427930776000. Its totient is φ = 33801083136.

The previous prime is 133909111577. The next prime is 133909111621. The reversal of 133909111620 is 26111909331.

133909111620 is a `hidden beast` number, since 13 + 3 + 9 + 0 + 9 + 1 + 11 + 620 = 666.

133909111620 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (133909111621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4187251 + ... + 4219109.

It is an arithmetic number, because the mean of its divisors is an integer number (2971741500).

Almost surely, 2^133909111620 is an apocalyptic number.

133909111620 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 133909111620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213965388000).

133909111620 is an abundant number, since it is smaller than the sum of its proper divisors (294021664380).

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

133909111620 is a wasteful number, since it uses less digits than its factorization.

133909111620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33122 (or 33117 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The spelling of 133909111620 in words is "one hundred thirty-three billion, nine hundred nine million, one hundred eleven thousand, six hundred twenty".