163501255052051 has 16 divisors (see below), whose sum is σ = 188907819513600. Its totient is φ = 138611568580128.

The previous prime is 163501255052033. The next prime is 163501255052117. The reversal of 163501255052051 is 150250552105361.

It is not a de Polignac number, because 163501255052051 - 2²⁶ = 163501187943187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163501255051051) 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, 189878921 + ... + 190738058.

It is an arithmetic number, because the mean of its divisors is an integer number (11806738719600).

Almost surely, 2^{163501255052051} is an apocalyptic number.

163501255052051 is a deficient number, since it is larger than the sum of its proper divisors (25406564461549).

163501255052051 is a wasteful number, since it uses less digits than its factorization.

163501255052051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380617658.

The product of its (nonzero) digits is 225000, while the sum is 41.

The spelling of 163501255052051 in words is "one hundred sixty-three trillion, five hundred one billion, two hundred fifty-five million, fifty-two thousand, fifty-one".