305438804156 has 12 divisors (see below), whose sum is σ = 543577533240. Its totient is φ = 150130937520.

The previous prime is 305438804123. The next prime is 305438804173. The reversal of 305438804156 is 651408834503.

It is a self number, because there is not a number n which added to its sum of digits gives 305438804156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647115875 + ... + 647116346.

It is an arithmetic number, because the mean of its divisors is an integer number (45298127770).

Almost surely, 2^305438804156 is an apocalyptic number.

It is an amenable number.

305438804156 is a deficient number, since it is larger than the sum of its proper divisors (238138729084).

305438804156 is a wasteful number, since it uses less digits than its factorization.

305438804156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294232284 (or 1294232282 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 305438804156 in words is "three hundred five billion, four hundred thirty-eight million, eight hundred four thousand, one hundred fifty-six".