20133400424 has 32 divisors (see below), whose sum is σ = 40285486080. Its totient is φ = 9399930624.

The previous prime is 20133400393. The next prime is 20133400453. The reversal of 20133400424 is 42400433102.

It is a self number, because there is not a number n which added to its sum of digits gives 20133400424.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565562 + ... + 600105.

It is an arithmetic number, because the mean of its divisors is an integer number (1258921440).

Almost surely, 2^20133400424 is an apocalyptic number.

It is an amenable number.

20133400424 is an abundant number, since it is smaller than the sum of its proper divisors (20152085656).

20133400424 is a wasteful number, since it uses less digits than its factorization.

20133400424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165817 (or 1165813 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20133400424 its reverse (42400433102), we get a palindrome (62533833526).

The spelling of 20133400424 in words is "twenty billion, one hundred thirty-three million, four hundred thousand, four hundred twenty-four".