305405605613256 has 128 divisors (see below), whose sum is σ = 765870880769280. Its totient is φ = 101488183566336.

The previous prime is 305405605613233. The next prime is 305405605613341. The reversal of 305405605613256 is 652316506504503.

It is a junction number, because it is equal to n+sod(n) for n = 305405605613199 and 305405605613208.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48148444821 + ... + 48148451163.

It is an arithmetic number, because the mean of its divisors is an integer number (5983366256010).

Almost surely, 2^{305405605613256} is an apocalyptic number.

It is an amenable number.

305405605613256 is an abundant number, since it is smaller than the sum of its proper divisors (460465275156024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305405605613256 is a wasteful number, since it uses less digits than its factorization.

305405605613256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10983 (or 10979 counting only the distinct ones).

The product of its (nonzero) digits is 9720000, while the sum is 51.

The spelling of 305405605613256 in words is "three hundred five trillion, four hundred five billion, six hundred five million, six hundred thirteen thousand, two hundred fifty-six".