663160566751 has 4 divisors (see below), whose sum is σ = 702170011872. Its totient is φ = 624151121632.

The previous prime is 663160566713. The next prime is 663160566763. The reversal of 663160566751 is 157665061366.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 663160566751 - 2¹⁵ = 663160533983 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 (663160566701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19504722535 + ... + 19504722568.

It is an arithmetic number, because the mean of its divisors is an integer number (175542502968).

Almost surely, 2^663160566751 is an apocalyptic number.

663160566751 is a deficient number, since it is larger than the sum of its proper divisors (39009445121).

663160566751 is a wasteful number, since it uses less digits than its factorization.

663160566751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39009445120.

The product of its (nonzero) digits is 4082400, while the sum is 52.

The spelling of 663160566751 in words is "six hundred sixty-three billion, one hundred sixty million, five hundred sixty-six thousand, seven hundred fifty-one".