20002053545 has 8 divisors (see below), whose sum is σ = 25414374024. Its totient is φ = 15060369664.

The previous prime is 20002053503. The next prime is 20002053553. The reversal of 20002053545 is 54535020002.

It can be written as a sum of positive squares in 4 ways, for example, as 3272183209 + 16729870336 = 57203^2 + 129344^2 .

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 20002053545 - 2⁶ = 20002053481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117659054 + ... + 117659223.

It is an arithmetic number, because the mean of its divisors is an integer number (3176796753).

Almost surely, 2^20002053545 is an apocalyptic number.

It is an amenable number.

20002053545 is a deficient number, since it is larger than the sum of its proper divisors (5412320479).

20002053545 is a wasteful number, since it uses less digits than its factorization.

20002053545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235318299.

The product of its (nonzero) digits is 6000, while the sum is 26.

Adding to 20002053545 its reverse (54535020002), we get a palindrome (74537073547).

The spelling of 20002053545 in words is "twenty billion, two million, fifty-three thousand, five hundred forty-five".