84193985650 has 12 divisors (see below), whose sum is σ = 156600813402. Its totient is φ = 33677594240.

The previous prime is 84193985641. The next prime is 84193985747. The reversal of 84193985650 is 5658939148.

It can be written as a sum of positive squares in 3 ways, for example, as 75257497561 + 8936488089 = 274331^2 + 94533^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 841939807 + ... + 841939906.

Almost surely, 2^84193985650 is an apocalyptic number.

84193985650 is a deficient number, since it is larger than the sum of its proper divisors (72406827752).

84193985650 is a wasteful number, since it uses less digits than its factorization.

84193985650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683879725 (or 1683879720 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 58.

The spelling of 84193985650 in words is "eighty-four billion, one hundred ninety-three million, nine hundred eighty-five thousand, six hundred fifty".