20058332694409 has 3 divisors (see below), whose sum is σ = 20058337173063. Its totient is φ = 20058328215756.

The previous prime is 20058332694403. The next prime is 20058332694419. The reversal of 20058332694409 is 90449623385002.

The square root of 20058332694409 is 4478653.

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 can be written as a sum of positive squares in only one way, i.e., 19362156060025 + 696176634384 = 4400245^2 + 834372^2 .

It is not a de Polignac number, because 20058332694409 - 2¹⁷ = 20058332563337 is a prime.

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 20058332694409.

It is not an unprimeable number, because it can be changed into a prime (20058332694403) 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, 2239327 + ... + 6717979.

It is an arithmetic number, because the mean of its divisors is an integer number (6686112391021).

Almost surely, 2^{20058332694409} is an apocalyptic number.

20058332694409 is the 4478653-rd square number.

20058332694409 is the 2239327-th centered octagonal number.

It is an amenable number.

20058332694409 is a deficient number, since it is larger than the sum of its proper divisors (4478654).

20058332694409 is an frugal number, since it uses more digits than its factorization.

20058332694409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8957306 (or 4478653 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 55.

The spelling of 20058332694409 in words is "twenty trillion, fifty-eight billion, three hundred thirty-two million, six hundred ninety-four thousand, four hundred nine".