20338677180 has 168 divisors, whose sum is σ = 64323119952. Its totient is φ = 5399467776.

The previous prime is 20338677173. The next prime is 20338677181. The reversal of 20338677180 is 8177683302.

20338677180 is a `hidden beast` number, since 20 + 3 + 386 + 77 + 180 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20338677181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 3394147 + ... + 3400133.

It is an arithmetic number, because the mean of its divisors is an integer number (382875714).

Almost surely, 2^20338677180 is an apocalyptic number.

20338677180 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 20338677180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32161559976).

20338677180 is an abundant number, since it is smaller than the sum of its proper divisors (43984442772).

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

20338677180 is a wasteful number, since it uses less digits than its factorization.

20338677180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6247 (or 6230 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 20338677180 in words is "twenty billion, three hundred thirty-eight million, six hundred seventy-seven thousand, one hundred eighty".