20123510012053 has 24 divisors (see below), whose sum is σ = 23549971511808. Its totient is φ = 17145072122976.

The previous prime is 20123510012041. The next prime is 20123510012117. The reversal of 20123510012053 is 35021001532102.

It is a de Polignac number, because none of the positive numbers 2^k-20123510012053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123510012653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5725200 + ... + 8545462.

It is an arithmetic number, because the mean of its divisors is an integer number (981248812992).

Almost surely, 2^{20123510012053} is an apocalyptic number.

It is an amenable number.

20123510012053 is a deficient number, since it is larger than the sum of its proper divisors (3426461499755).

20123510012053 is a wasteful number, since it uses less digits than its factorization.

20123510012053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821153 (or 2821146 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 20123510012053 its reverse (35021001532102), we get a palindrome (55144511544155).

The spelling of 20123510012053 in words is "twenty trillion, one hundred twenty-three billion, five hundred ten million, twelve thousand, fifty-three".