163251366050663 has 16 divisors (see below), whose sum is σ = 178596966955680. Its totient is φ = 147990059529600.

The previous prime is 163251366050639. The next prime is 163251366050699. The reversal of 163251366050663 is 366050663152361.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 163251366050663 - 2¹⁴ = 163251366034279 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 (163251366050363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11357681 + ... + 21342437.

It is an arithmetic number, because the mean of its divisors is an integer number (11162310434730).

Almost surely, 2^{163251366050663} is an apocalyptic number.

163251366050663 is a deficient number, since it is larger than the sum of its proper divisors (15345600905017).

163251366050663 is a wasteful number, since it uses less digits than its factorization.

163251366050663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9988978.

The product of its (nonzero) digits is 10497600, while the sum is 53.

The spelling of 163251366050663 in words is "one hundred sixty-three trillion, two hundred fifty-one billion, three hundred sixty-six million, fifty thousand, six hundred sixty-three".