20143786404 has 96 divisors (see below), whose sum is σ = 57239481600. Its totient is φ = 5382254592.

The previous prime is 20143786393. The next prime is 20143786417. The reversal of 20143786404 is 40468734102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179272 + ... + 269120.

It is an arithmetic number, because the mean of its divisors is an integer number (596244600).

Almost surely, 2^20143786404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20143786404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28619740800).

20143786404 is an abundant number, since it is smaller than the sum of its proper divisors (37095695196).

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

20143786404 is a wasteful number, since it uses less digits than its factorization.

20143786404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90037 (or 90035 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 20143786404 in words is "twenty billion, one hundred forty-three million, seven hundred eighty-six thousand, four hundred four".