663260443530 has 16 divisors (see below), whose sum is σ = 1591825064544. Its totient is φ = 176869451600.

The previous prime is 663260443453. The next prime is 663260443541. The reversal of 663260443530 is 35344062366.

It is a super-3 number, since 3×663260443530³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11054340696 + ... + 11054340755.

It is an arithmetic number, because the mean of its divisors is an integer number (99489066534).

Almost surely, 2^663260443530 is an apocalyptic number.

663260443530 is an abundant number, since it is smaller than the sum of its proper divisors (928564621014).

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

663260443530 is a wasteful number, since it uses less digits than its factorization.

663260443530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22108681461.

The product of its (nonzero) digits is 933120, while the sum is 42.

The spelling of 663260443530 in words is "six hundred sixty-three billion, two hundred sixty million, four hundred forty-three thousand, five hundred thirty".