20424132323653 has 4 divisors (see below), whose sum is σ = 20424144672288. Its totient is φ = 20424119975020.

The previous prime is 20424132323591. The next prime is 20424132323659. The reversal of 20424132323653 is 35632323142402.

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 a de Polignac number, because none of the positive numbers 2^k-20424132323653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424132323659) 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, 3223201 + ... + 7158022.

It is an arithmetic number, because the mean of its divisors is an integer number (5106036168072).

Almost surely, 2^{20424132323653} is an apocalyptic number.

It is an amenable number.

20424132323653 is a deficient number, since it is larger than the sum of its proper divisors (12348635).

20424132323653 is a wasteful number, since it uses less digits than its factorization.

20424132323653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12348634.

The product of its (nonzero) digits is 622080, while the sum is 40.

The spelling of 20424132323653 in words is "twenty trillion, four hundred twenty-four billion, one hundred thirty-two million, three hundred twenty-three thousand, six hundred fifty-three".