20386165331394 has 20 divisors (see below), whose sum is σ = 45680111205894. Its totient is φ = 6795388443744.

The previous prime is 20386165331341. The next prime is 20386165331419. The reversal of 20386165331394 is 49313356168302.

20386165331394 is a `hidden beast` number, since 2 + 0 + 3 + 8 + 6 + 1 + 6 + 533 + 13 + 94 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20213971040025 + 172194291369 = 4495995^2 + 414963^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 20386165331394.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 62920263207 + ... + 62920263530.

Almost surely, 2^{20386165331394} is an apocalyptic number.

20386165331394 is an abundant number, since it is smaller than the sum of its proper divisors (25293945874500).

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

20386165331394 is a wasteful number, since it uses less digits than its factorization.

20386165331394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125840526751 (or 125840526742 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 54.

The spelling of 20386165331394 in words is "twenty trillion, three hundred eighty-six billion, one hundred sixty-five million, three hundred thirty-one thousand, three hundred ninety-four".