305142345643 has 4 divisors (see below), whose sum is σ = 308163557088. Its totient is φ = 302121134200.

The previous prime is 305142345593. The next prime is 305142345647. The reversal of 305142345643 is 346543241503.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 305142345643 - 2²⁹ = 304605474731 is a prime.

It is a super-2 number, since 2×305142345643² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 305142345596 and 305142345605.

It is not an unprimeable number, because it can be changed into a prime (305142345647) 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 3 ways as a sum of consecutive naturals, for example, 1510605571 + ... + 1510605772.

It is an arithmetic number, because the mean of its divisors is an integer number (77040889272).

Almost surely, 2^305142345643 is an apocalyptic number.

305142345643 is a deficient number, since it is larger than the sum of its proper divisors (3021211445).

305142345643 is a wasteful number, since it uses less digits than its factorization.

305142345643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3021211444.

The product of its (nonzero) digits is 518400, while the sum is 40.

The spelling of 305142345643 in words is "three hundred five billion, one hundred forty-two million, three hundred forty-five thousand, six hundred forty-three".