20432672121061 has 4 divisors (see below), whose sum is σ = 20567987830624. Its totient is φ = 20297356411500.

The previous prime is 20432672121049. The next prime is 20432672121107. The reversal of 20432672121061 is 16012127623402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20432672121061 - 2¹³ = 20432672112869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20432672121061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432672721061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67657854555 + ... + 67657854856.

It is an arithmetic number, because the mean of its divisors is an integer number (5141996957656).

Almost surely, 2^{20432672121061} is an apocalyptic number.

It is an amenable number.

20432672121061 is a deficient number, since it is larger than the sum of its proper divisors (135315709563).

20432672121061 is a wasteful number, since it uses less digits than its factorization.

20432672121061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135315709562.

The product of its (nonzero) digits is 48384, while the sum is 37.

Adding to 20432672121061 its reverse (16012127623402), we get a palindrome (36444799744463).

The spelling of 20432672121061 in words is "twenty trillion, four hundred thirty-two billion, six hundred seventy-two million, one hundred twenty-one thousand, sixty-one".