20133308940 has 24 divisors (see below), whose sum is σ = 56373265200. Its totient is φ = 5368882368.

The previous prime is 20133308939. The next prime is 20133308989. The reversal of 20133308940 is 4980333102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167777515 + ... + 167777634.

It is an arithmetic number, because the mean of its divisors is an integer number (2348886050).

Almost surely, 2^20133308940 is an apocalyptic number.

20133308940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20133308940 is an abundant number, since it is smaller than the sum of its proper divisors (36239956260).

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

20133308940 is a wasteful number, since it uses less digits than its factorization.

20133308940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335555161 (or 335555159 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The spelling of 20133308940 in words is "twenty billion, one hundred thirty-three million, three hundred eight thousand, nine hundred forty".