854871897446 has 48 divisors (see below), whose sum is σ = 1520953070400. Its totient is φ = 359212725648.

The previous prime is 854871897433. The next prime is 854871897563. The reversal of 854871897446 is 644798178458.

It is a super-2 number, since 2×854871897446² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 854871897446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1996325 + ... + 2386431.

It is an arithmetic number, because the mean of its divisors is an integer number (31686522300).

Almost surely, 2^854871897446 is an apocalyptic number.

854871897446 is a deficient number, since it is larger than the sum of its proper divisors (666081172954).

854871897446 is a wasteful number, since it uses less digits than its factorization.

854871897446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390561 (or 390554 counting only the distinct ones).

The product of its digits is 433520640, while the sum is 71.

The spelling of 854871897446 in words is "eight hundred fifty-four billion, eight hundred seventy-one million, eight hundred ninety-seven thousand, four hundred forty-six".