20344646543601 has 16 divisors (see below), whose sum is σ = 27363008471040. Its totient is φ = 13444916481360.

The previous prime is 20344646543531. The next prime is 20344646543657. The reversal of 20344646543601 is 10634564644302.

It is not a de Polignac number, because 20344646543601 - 2¹⁴ = 20344646527217 is a prime.

It is a super-2 number, since 2×20344646543601² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20344646543201) 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, 27803985 + ... + 28526318.

It is an arithmetic number, because the mean of its divisors is an integer number (1710188029440).

Almost surely, 2^{20344646543601} is an apocalyptic number.

It is an amenable number.

20344646543601 is a deficient number, since it is larger than the sum of its proper divisors (7018361927439).

20344646543601 is a wasteful number, since it uses less digits than its factorization.

20344646543601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56331356.

The product of its (nonzero) digits is 4976640, while the sum is 48.

The spelling of 20344646543601 in words is "twenty trillion, three hundred forty-four billion, six hundred forty-six million, five hundred forty-three thousand, six hundred one".