20045552113 has 8 divisors (see below), whose sum is σ = 20252094696. Its totient is φ = 19839168000.

The previous prime is 20045552101. The next prime is 20045552129. The reversal of 20045552113 is 31125554002.

It can be written as a sum of positive squares in 4 ways, for example, as 5925458529 + 14120093584 = 76977^2 + 118828^2 .

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 20045552113 - 2²¹ = 20043454961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20045552213) 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, 223623 + ... + 300163.

It is an arithmetic number, because the mean of its divisors is an integer number (2531511837).

Almost surely, 2^20045552113 is an apocalyptic number.

It is an amenable number.

20045552113 is a deficient number, since it is larger than the sum of its proper divisors (206542583).

20045552113 is a wasteful number, since it uses less digits than its factorization.

20045552113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79235.

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 20045552113 in words is "twenty billion, forty-five million, five hundred fifty-two thousand, one hundred thirteen".