663170280366 has 16 divisors (see below), whose sum is σ = 1446916975488. Its totient is φ = 200960691000.

The previous prime is 663170280361. The next prime is 663170280379. The reversal of 663170280366 is 663082071366.

It is a happy number.

663170280366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663170280361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5024017210 + ... + 5024017341.

It is an arithmetic number, because the mean of its divisors is an integer number (90432310968).

Almost surely, 2^663170280366 is an apocalyptic number.

663170280366 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

663170280366 is an abundant number, since it is smaller than the sum of its proper divisors (783746695122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663170280366 is a wasteful number, since it uses less digits than its factorization.

663170280366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10048034567.

The product of its (nonzero) digits is 1306368, while the sum is 48.

The spelling of 663170280366 in words is "six hundred sixty-three billion, one hundred seventy million, two hundred eighty thousand, three hundred sixty-six".