305534144634123 has 16 divisors (see below), whose sum is σ = 407519973365120. Its totient is φ = 203618884746816.

The previous prime is 305534144634083. The next prime is 305534144634161. The reversal of 305534144634123 is 321436441435503.

It is a happy number.

It is not a de Polignac number, because 305534144634123 - 2²⁰ = 305534143585547 is a prime.

It is a super-2 number, since 2×305534144634123² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (305534144634163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101478936 + ... + 104446362.

It is an arithmetic number, because the mean of its divisors is an integer number (25469998335320).

Almost surely, 2^{305534144634123} is an apocalyptic number.

305534144634123 is a deficient number, since it is larger than the sum of its proper divisors (101985828730997).

305534144634123 is a wasteful number, since it uses less digits than its factorization.

305534144634123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979306.

The product of its (nonzero) digits is 6220800, while the sum is 48.

The spelling of 305534144634123 in words is "three hundred five trillion, five hundred thirty-four billion, one hundred forty-four million, six hundred thirty-four thousand, one hundred twenty-three".