20000023405145 has 32 divisors (see below), whose sum is σ = 27815579283456. Its totient is φ = 13520823019200.

The previous prime is 20000023405133. The next prime is 20000023405163. The reversal of 20000023405145 is 54150432000002.

It is a happy number.

It is not a de Polignac number, because 20000023405145 - 2¹² = 20000023401049 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 (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157801250 + ... + 157927940.

It is an arithmetic number, because the mean of its divisors is an integer number (869236852608).

Almost surely, 2^{20000023405145} is an apocalyptic number.

It is an amenable number.

20000023405145 is a deficient number, since it is larger than the sum of its proper divisors (7815555878311).

20000023405145 is a wasteful number, since it uses less digits than its factorization.

20000023405145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190301.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 20000023405145 its reverse (54150432000002), we get a palindrome (74150455405147).

The spelling of 20000023405145 in words is "twenty trillion, twenty-three million, four hundred five thousand, one hundred forty-five".