20550453141013 has 4 divisors (see below), whose sum is σ = 20558378501548. Its totient is φ = 20542527780480.

The previous prime is 20550453140999. The next prime is 20550453141059. The reversal of 20550453141013 is 31014135405502.

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 10019143081809 + 10531310059204 = 3165303^2 + 3245198^2 .

It is a cyclic number.

It is not a de Polignac number, because 20550453141013 - 2⁴¹ = 18351429885461 is a prime.

It is a super-2 number, since 2×20550453141013² (a number of 27 digits) contains 22 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 20550453141013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20550453142013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3962676378 + ... + 3962681563.

It is an arithmetic number, because the mean of its divisors is an integer number (5139594625387).

Almost surely, 2^{20550453141013} is an apocalyptic number.

It is an amenable number.

20550453141013 is a deficient number, since it is larger than the sum of its proper divisors (7925360535).

20550453141013 is an equidigital number, since it uses as much as digits as its factorization.

20550453141013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7925360534.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 20550453141013 its reverse (31014135405502), we get a palindrome (51564588546515).

The spelling of 20550453141013 in words is "twenty trillion, five hundred fifty billion, four hundred fifty-three million, one hundred forty-one thousand, thirteen".