663772885855442 has 16 divisors (see below), whose sum is σ = 1121211678161664. Its totient is φ = 291982207854000.

The previous prime is 663772885855427. The next prime is 663772885855483. The reversal of 663772885855442 is 244558588277366.

663772885855442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 486637012409 + ... + 486637013772.

It is an arithmetic number, because the mean of its divisors is an integer number (70075729885104).

Almost surely, 2^{663772885855442} is an apocalyptic number.

663772885855442 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

663772885855442 is a deficient number, since it is larger than the sum of its proper divisors (457438792306222).

663772885855442 is a wasteful number, since it uses less digits than its factorization.

663772885855442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973274026225.

The product of its digits is 21676032000, while the sum is 80.

The spelling of 663772885855442 in words is "six hundred sixty-three trillion, seven hundred seventy-two billion, eight hundred eighty-five million, eight hundred fifty-five thousand, four hundred forty-two".