404856848417855 has 16 divisors (see below), whose sum is σ = 489855018939264. Its totient is φ = 321210282355200.

The previous prime is 404856848417809. The next prime is 404856848417863. The reversal of 404856848417855 is 558714848658404.

It is a de Polignac number, because none of the positive numbers 2^k-404856848417855 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 583247399 + ... + 583941128.

It is an arithmetic number, because the mean of its divisors is an integer number (30615938683704).

Almost surely, 2^{404856848417855} is an apocalyptic number.

404856848417855 is a deficient number, since it is larger than the sum of its proper divisors (84998170521409).

404856848417855 is a wasteful number, since it uses less digits than its factorization.

404856848417855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167189106.

The product of its (nonzero) digits is 5505024000, while the sum is 77.

The spelling of 404856848417855 in words is "four hundred four trillion, eight hundred fifty-six billion, eight hundred forty-eight million, four hundred seventeen thousand, eight hundred fifty-five".