20010023450205 has 16 divisors (see below), whose sum is σ = 32016172181760. Its totient is φ = 10671967619648.

The previous prime is 20010023450191. The next prime is 20010023450233. The reversal of 20010023450205 is 50205432001002.

It is a cyclic number.

It is not a de Polignac number, because 20010023450205 - 2⁴ = 20010023450189 is a prime.

It is a super-2 number, since 2×20010023450205² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1050691 + ... + 6412799.

It is an arithmetic number, because the mean of its divisors is an integer number (2001010761360).

Almost surely, 2^{20010023450205} is an apocalyptic number.

It is an amenable number.

20010023450205 is a deficient number, since it is larger than the sum of its proper divisors (12006148731555).

20010023450205 is a wasteful number, since it uses less digits than its factorization.

20010023450205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5610900.

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 20010023450205 its reverse (50205432001002), we get a palindrome (70215455451207).

The spelling of 20010023450205 in words is "twenty trillion, ten billion, twenty-three million, four hundred fifty thousand, two hundred five".