1428641205856 has 24 divisors (see below), whose sum is σ = 2814922291104. Its totient is φ = 713740306560.

The previous prime is 1428641205841. The next prime is 1428641205869. The reversal of 1428641205856 is 6585021468241.

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, 18094255 + ... + 18173038.

It is an arithmetic number, because the mean of its divisors is an integer number (117288428796).

Almost surely, 2^{1428641205856} is an apocalyptic number.

1428641205856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1428641205856 is a deficient number, since it is larger than the sum of its proper divisors (1386281085248).

1428641205856 is a wasteful number, since it uses less digits than its factorization.

1428641205856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36268534 (or 36268526 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 52.

The spelling of 1428641205856 in words is "one trillion, four hundred twenty-eight billion, six hundred forty-one million, two hundred five thousand, eight hundred fifty-six".