20273732033645 has 8 divisors (see below), whose sum is σ = 24329642774904. Its totient is φ = 16218209403904.

The previous prime is 20273732033579. The next prime is 20273732033647. The reversal of 20273732033645 is 54633023737202.

It can be written as a sum of positive squares in 4 ways, for example, as 963094927876 + 19310637105769 = 981374^2 + 4394387^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20273732033645 - 2²⁴ = 20273715256429 is a prime.

It is a super-3 number, since 3×20273732033645³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 20273732033645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20273732033647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96912944 + ... + 97121913.

It is an arithmetic number, because the mean of its divisors is an integer number (3041205346863).

Almost surely, 2^{20273732033645} is an apocalyptic number.

It is an amenable number.

20273732033645 is a deficient number, since it is larger than the sum of its proper divisors (4055910741259).

20273732033645 is a wasteful number, since it uses less digits than its factorization.

20273732033645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194055759.

The product of its (nonzero) digits is 3810240, while the sum is 47.

The spelling of 20273732033645 in words is "twenty trillion, two hundred seventy-three billion, seven hundred thirty-two million, thirty-three thousand, six hundred forty-five".