20130432344021 has 16 divisors (see below), whose sum is σ = 22627732646400. Its totient is φ = 17819339428800.

The previous prime is 20130432343997. The next prime is 20130432344051. The reversal of 20130432344021 is 12044323403102.

It is a cyclic number.

It is not a de Polignac number, because 20130432344021 - 2²² = 20130428149717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130432344051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 589246790 + ... + 589280951.

It is an arithmetic number, because the mean of its divisors is an integer number (1414233290400).

Almost surely, 2^{20130432344021} is an apocalyptic number.

It is an amenable number.

20130432344021 is a deficient number, since it is larger than the sum of its proper divisors (2497300302379).

20130432344021 is a wasteful number, since it uses less digits than its factorization.

20130432344021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178527820.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 20130432344021 its reverse (12044323403102), we get a palindrome (32174755747123).

The spelling of 20130432344021 in words is "twenty trillion, one hundred thirty billion, four hundred thirty-two million, three hundred forty-four thousand, twenty-one".