20433434423140 has 24 divisors (see below), whose sum is σ = 42910897095360. Its totient is φ = 8173243329888.

The previous prime is 20433434423123. The next prime is 20433434423197. The reversal of 20433434423140 is 4132443433402.

It is a self number, because there is not a number n which added to its sum of digits gives 20433434423140.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6862950 + ... + 9379069.

It is an arithmetic number, because the mean of its divisors is an integer number (1787954045640).

Almost surely, 2^{20433434423140} is an apocalyptic number.

20433434423140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20433434423140 is an abundant number, since it is smaller than the sum of its proper divisors (22477462672220).

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

20433434423140 is a wasteful number, since it uses less digits than its factorization.

20433434423140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16304931 (or 16304929 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 37.

Adding to 20433434423140 its reverse (4132443433402), we get a palindrome (24565877856542).

The spelling of 20433434423140 in words is "twenty trillion, four hundred thirty-three billion, four hundred thirty-four million, four hundred twenty-three thousand, one hundred forty".