20337433380 has 144 divisors (see below), whose sum is σ = 67349265984. Its totient is φ = 4926562560.

The previous prime is 20337433331. The next prime is 20337433411. The reversal of 20337433380 is 8333473302.

20337433380 is a `hidden beast` number, since 203 + 3 + 74 + 3 + 3 + 380 = 666.

It is a super-2 number, since 2×20337433380² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3349107 + ... + 3355173.

It is an arithmetic number, because the mean of its divisors is an integer number (467703236).

Almost surely, 2^20337433380 is an apocalyptic number.

20337433380 is a gapful number since it is divisible by the number (20) 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 20337433380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33674632992).

20337433380 is an abundant number, since it is smaller than the sum of its proper divisors (47011832604).

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

20337433380 is a wasteful number, since it uses less digits than its factorization.

20337433380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7786 (or 7781 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 36.

The spelling of 20337433380 in words is "twenty billion, three hundred thirty-seven million, four hundred thirty-three thousand, three hundred eighty".