20130423203044 has 24 divisors (see below), whose sum is σ = 43920923352768. Its totient is φ = 7843022027040.

The previous prime is 20130423203041. The next prime is 20130423203071. The reversal of 20130423203044 is 44030232403102.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (20130423203041) 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, 32679258139 + ... + 32679258754.

It is an arithmetic number, because the mean of its divisors is an integer number (1830038473032).

Almost surely, 2^{20130423203044} is an apocalyptic number.

It is an amenable number.

20130423203044 is an abundant number, since it is smaller than the sum of its proper divisors (23790500149724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20130423203044 is a wasteful number, since it uses less digits than its factorization.

20130423203044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65358516915 (or 65358516913 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 20130423203044 its reverse (44030232403102), we get a palindrome (64160655606146).

The spelling of 20130423203044 in words is "twenty trillion, one hundred thirty billion, four hundred twenty-three million, two hundred three thousand, forty-four".