20421432412032 has 32 divisors (see below), whose sum is σ = 54244429845480. Its totient is φ = 6807144137216.

The previous prime is 20421432412021. The next prime is 20421432412033. The reversal of 20421432412032 is 23021423412402.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×20421432412032² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20421432412033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26590406403 + ... + 26590407170.

Almost surely, 2^{20421432412032} is an apocalyptic number.

It is an amenable number.

20421432412032 is an abundant number, since it is smaller than the sum of its proper divisors (33822997433448).

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

20421432412032 is an equidigital number, since it uses as much as digits as its factorization.

20421432412032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53180813590 (or 53180813578 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 20421432412032 its reverse (23021423412402), we get a palindrome (43442855824434).

The spelling of 20421432412032 in words is "twenty trillion, four hundred twenty-one billion, four hundred thirty-two million, four hundred twelve thousand, thirty-two".