305506042685 has 32 divisors (see below), whose sum is σ = 387297469440. Its totient is φ = 231044774400.

The previous prime is 305506042643. The next prime is 305506042691. The reversal of 305506042685 is 586240605503.

It is a de Polignac number, because none of the positive numbers 2^k-305506042685 is a prime.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 1011575 + ... + 1278395.

It is an arithmetic number, because the mean of its divisors is an integer number (12103045920).

Almost surely, 2^305506042685 is an apocalyptic number.

It is an amenable number.

305506042685 is a deficient number, since it is larger than the sum of its proper divisors (81791426755).

305506042685 is a wasteful number, since it uses less digits than its factorization.

305506042685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267029.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 305506042685 in words is "three hundred five billion, five hundred six million, forty-two thousand, six hundred eighty-five".