163799129522 has 18 divisors (see below), whose sum is σ = 285819757983. Its totient is φ = 70197909852.

The previous prime is 163799129513. The next prime is 163799129567. The reversal of 163799129522 is 225921997361.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 81899564761 + 81899564761 = 286181^2 + 286181^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=286181.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3986093 + ... + 4026975.

Almost surely, 2^163799129522 is an apocalyptic number.

163799129522 is a deficient number, since it is larger than the sum of its proper divisors (122020628461).

163799129522 is an frugal number, since it uses more digits than its factorization.

163799129522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81782 (or 40892 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 56.

The spelling of 163799129522 in words is "one hundred sixty-three billion, seven hundred ninety-nine million, one hundred twenty-nine thousand, five hundred twenty-two".