20423411344 has 40 divisors (see below), whose sum is σ = 46326284928. Its totient is φ = 8539403520.

The previous prime is 20423411339. The next prime is 20423411347. The reversal of 20423411344 is 44311432402.

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 (20423411347) 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, 2219212 + ... + 2228395.

Almost surely, 2^20423411344 is an apocalyptic number.

It is an amenable number.

20423411344 is an abundant number, since it is smaller than the sum of its proper divisors (25902873584).

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

20423411344 is a wasteful number, since it uses less digits than its factorization.

20423411344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4447663 (or 4447657 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 20423411344 its reverse (44311432402), we get a palindrome (64734843746).

The spelling of 20423411344 in words is "twenty billion, four hundred twenty-three million, four hundred eleven thousand, three hundred forty-four".