20111434024 has 64 divisors (see below), whose sum is σ = 42279336000. Its totient is φ = 8889592320.

The previous prime is 20111434003. The next prime is 20111434073. The reversal of 20111434024 is 42043411102.

It is a happy number.

It is a super-4 number, since 4×20111434024⁴ (a number of 42 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 20111433986 and 20111434004.

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, 854932 + ... + 878140.

It is an arithmetic number, because the mean of its divisors is an integer number (660614625).

Almost surely, 2^20111434024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20111434024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21139668000).

20111434024 is an abundant number, since it is smaller than the sum of its proper divisors (22167901976).

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

20111434024 is a wasteful number, since it uses less digits than its factorization.

20111434024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23498 (or 23494 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20111434024 its reverse (42043411102), we get a palindrome (62154845126).

The spelling of 20111434024 in words is "twenty billion, one hundred eleven million, four hundred thirty-four thousand, twenty-four".