20389666759814 has 32 divisors (see below), whose sum is σ = 35331055632000. Its totient is φ = 8721986739840.

The previous prime is 20389666759789. The next prime is 20389666759817. The reversal of 20389666759814 is 41895766698302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20389666759817) 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 15 ways as a sum of consecutive naturals, for example, 1077857 + ... + 6476195.

It is an arithmetic number, because the mean of its divisors is an integer number (1104095488500).

It is a 2-persistent number, because it is pandigital, and so is 2⋅20389666759814 = 40779333519628, but 3⋅20389666759814 = 61169000279442 is not.

Almost surely, 2^{20389666759814} is an apocalyptic number.

20389666759814 is a deficient number, since it is larger than the sum of its proper divisors (14941388872186).

20389666759814 is a wasteful number, since it uses less digits than its factorization.

20389666759814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5408468.

The product of its (nonzero) digits is 940584960, while the sum is 74.

The spelling of 20389666759814 in words is "twenty trillion, three hundred eighty-nine billion, six hundred sixty-six million, seven hundred fifty-nine thousand, eight hundred fourteen".