663145104205 has 16 divisors (see below), whose sum is σ = 857159230464. Its totient is φ = 491080803840.

The previous prime is 663145104187. The next prime is 663145104221. The reversal of 663145104205 is 502401541366.

It is not a de Polignac number, because 663145104205 - 2⁵ = 663145104173 is a prime.

It is a super-2 number, since 2×663145104205² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93004164 + ... + 93011293.

It is an arithmetic number, because the mean of its divisors is an integer number (53572451904).

Almost surely, 2^663145104205 is an apocalyptic number.

It is an amenable number.

663145104205 is a deficient number, since it is larger than the sum of its proper divisors (194014126259).

663145104205 is a wasteful number, since it uses less digits than its factorization.

663145104205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186015516.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 663145104205 in words is "six hundred sixty-three billion, one hundred forty-five million, one hundred four thousand, two hundred five".