20183697361129 has 3 divisors (see below), whose sum is σ = 20183701853757. Its totient is φ = 20183692868502.

The previous prime is 20183697361111. The next prime is 20183697361141. The reversal of 20183697361129 is 92116379638102.

It is a happy number.

The square root of 20183697361129 is 4492627.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 20183697361129 - 2²⁵ = 20183663806697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20183697367129) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2246314 + ... + 6738940.

It is an arithmetic number, because the mean of its divisors is an integer number (6727900617919).

Almost surely, 2^{20183697361129} is an apocalyptic number.

20183697361129 is the 4492627-th square number.

20183697361129 is the 2246314-th centered octagonal number.

It is an amenable number.

20183697361129 is a deficient number, since it is larger than the sum of its proper divisors (4492628).

20183697361129 is an frugal number, since it uses more digits than its factorization.

20183697361129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8985254 (or 4492627 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 58.

It can be divided in two parts, 201836973 and 61129, that added together give a palindrome (201898102).

The spelling of 20183697361129 in words is "twenty trillion, one hundred eighty-three billion, six hundred ninety-seven million, three hundred sixty-one thousand, one hundred twenty-nine".