20143786405 has 8 divisors (see below), whose sum is σ = 24191392032. Its totient is φ = 16102463568.

The previous prime is 20143786393. The next prime is 20143786417. The reversal of 20143786405 is 50468734102.

It is an interprime number because it is at equal distance from previous prime (20143786393) and next prime (20143786417).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20143786405 - 2¹¹ = 20143784357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1563639 + ... + 1576468.

It is an arithmetic number, because the mean of its divisors is an integer number (3023924004).

Almost surely, 2^20143786405 is an apocalyptic number.

It is an amenable number.

20143786405 is a deficient number, since it is larger than the sum of its proper divisors (4047605627).

20143786405 is a wasteful number, since it uses less digits than its factorization.

20143786405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3141395.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 20143786405 in words is "twenty billion, one hundred forty-three million, seven hundred eighty-six thousand, four hundred five".