20094477712129 has 4 divisors (see below), whose sum is σ = 20177857287940. Its totient is φ = 20011098136320.

The previous prime is 20094477712093. The next prime is 20094477712187. The reversal of 20094477712129 is 92121777449002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7875768704400 + 12218709007729 = 2806380^2 + 3495527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20094477712129 is a prime.

It is a super-3 number, since 3×20094477712129³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20094477712129.

It is not an unprimeable number, because it can be changed into a prime (20094477715129) 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 3 ways as a sum of consecutive naturals, for example, 41689787544 + ... + 41689788025.

It is an arithmetic number, because the mean of its divisors is an integer number (5044464321985).

Almost surely, 2^{20094477712129} is an apocalyptic number.

It is an amenable number.

20094477712129 is a deficient number, since it is larger than the sum of its proper divisors (83379575811).

20094477712129 is an equidigital number, since it uses as much as digits as its factorization.

20094477712129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83379575810.

The product of its (nonzero) digits is 3556224, while the sum is 55.

The spelling of 20094477712129 in words is "twenty trillion, ninety-four billion, four hundred seventy-seven million, seven hundred twelve thousand, one hundred twenty-nine".