20423134044 has 48 divisors (see below), whose sum is σ = 52996330240. Its totient is φ = 6801608880.

The previous prime is 20423134021. The next prime is 20423134079. The reversal of 20423134044 is 44043132402.

It is a happy number.

20423134044 is a `hidden beast` number, since 20 + 4 + 231 + 3 + 404 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20423133999 and 20423134017.

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, 37089 + ... + 205479.

Almost surely, 2^20423134044 is an apocalyptic number.

It is an amenable number.

20423134044 is an abundant number, since it is smaller than the sum of its proper divisors (32573196196).

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

20423134044 is a wasteful number, since it uses less digits than its factorization.

20423134044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169527 (or 169519 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 20423134044 its reverse (44043132402), we get a palindrome (64466266446).

The spelling of 20423134044 in words is "twenty billion, four hundred twenty-three million, one hundred thirty-four thousand, forty-four".