163434220050561 has 32 divisors (see below), whose sum is σ = 235664951205888. Its totient is φ = 100354410159360.

The previous prime is 163434220050551. The next prime is 163434220050589. The reversal of 163434220050561 is 165050022434361.

It is not a de Polignac number, because 163434220050561 - 2¹⁵ = 163434220017793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163434220050551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18880006 + ... + 26140448.

It is an arithmetic number, because the mean of its divisors is an integer number (7364529725184).

Almost surely, 2^{163434220050561} is an apocalyptic number.

It is an amenable number.

163434220050561 is a deficient number, since it is larger than the sum of its proper divisors (72230731155327).

163434220050561 is a wasteful number, since it uses less digits than its factorization.

163434220050561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7269901.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 163434220050561 in words is "one hundred sixty-three trillion, four hundred thirty-four billion, two hundred twenty million, fifty thousand, five hundred sixty-one".