20344364101663 has 16 divisors (see below), whose sum is σ = 23407431220800. Its totient is φ = 17320486176000.

The previous prime is 20344364101657. The next prime is 20344364101667. The reversal of 20344364101663 is 36610146344302.

It is not a de Polignac number, because 20344364101663 - 2¹⁷ = 20344363970591 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 (20344364101667) 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, 37845363 + ... + 38379163.

It is an arithmetic number, because the mean of its divisors is an integer number (1462964451300).

Almost surely, 2^{20344364101663} is an apocalyptic number.

20344364101663 is a deficient number, since it is larger than the sum of its proper divisors (3063067119137).

20344364101663 is a wasteful number, since it uses less digits than its factorization.

20344364101663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570498.

The product of its (nonzero) digits is 746496, while the sum is 43.

The spelling of 20344364101663 in words is "twenty trillion, three hundred forty-four billion, three hundred sixty-four million, one hundred one thousand, six hundred sixty-three".