805642084898 has 12 divisors (see below), whose sum is σ = 1405763229942. Its totient is φ = 345275179200.

The previous prime is 805642084889. The next prime is 805642084901. The reversal of 805642084898 is 898480246508.

It can be written as a sum of positive squares in only one way, i.e., 430563005929 + 375079078969 = 656173^2 + 612437^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 805642084898.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4110418703 + ... + 4110418898.

Almost surely, 2^805642084898 is an apocalyptic number.

805642084898 is a deficient number, since it is larger than the sum of its proper divisors (600121145044).

805642084898 is a wasteful number, since it uses less digits than its factorization.

805642084898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8220837617 (or 8220837610 counting only the distinct ones).

The product of its (nonzero) digits is 35389440, while the sum is 62.

The spelling of 805642084898 in words is "eight hundred five billion, six hundred forty-two million, eighty-four thousand, eight hundred ninety-eight".