20183194332240 has 160 divisors (see below), whose sum is σ = 63458784806400. Its totient is φ = 5305762775040.

The previous prime is 20183194332173. The next prime is 20183194332247. The reversal of 20183194332240 is 4223349138102.

It is a super-2 number, since 2×20183194332240² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20183194332192 and 20183194332201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20183194332247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11323006 + ... + 12983714.

It is an arithmetic number, because the mean of its divisors is an integer number (396617405040).

Almost surely, 2^{20183194332240} is an apocalyptic number.

20183194332240 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 20183194332240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31729392403200).

20183194332240 is an abundant number, since it is smaller than the sum of its proper divisors (43275590474160).

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

20183194332240 is a wasteful number, since it uses less digits than its factorization.

20183194332240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661445 (or 1661439 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 20183194332240 in words is "twenty trillion, one hundred eighty-three billion, one hundred ninety-four million, three hundred thirty-two thousand, two hundred forty".