20005331244249 has 32 divisors (see below), whose sum is σ = 28931731569664. Its totient is φ = 12222788880960.

The previous prime is 20005331244211. The next prime is 20005331244257. The reversal of 20005331244249 is 94244213350002.

It is not a de Polignac number, because 20005331244249 - 2¹⁶ = 20005331178713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20005331240249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4520034 + ... + 7774404.

It is an arithmetic number, because the mean of its divisors is an integer number (904116611552).

Almost surely, 2^{20005331244249} is an apocalyptic number.

It is an amenable number.

20005331244249 is a deficient number, since it is larger than the sum of its proper divisors (8926400325415).

20005331244249 is a wasteful number, since it uses less digits than its factorization.

20005331244249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255517.

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 20005331244249 in words is "twenty trillion, five billion, three hundred thirty-one million, two hundred forty-four thousand, two hundred forty-nine".