99865987370 has 16 divisors (see below), whose sum is σ = 179763428520. Its totient is φ = 39945361344.

The previous prime is 99865987363. The next prime is 99865987409. The reversal of 99865987370 is 7378956899.

It can be written as a sum of positive squares in 4 ways, for example, as 44986834201 + 54879153169 = 212101^2 + 234263^2 .

It is a junction number, because it is equal to n+sod(n) for n = 99865987294 and 99865987303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367544 + ... + 578636.

Almost surely, 2^99865987370 is an apocalyptic number.

99865987370 is a deficient number, since it is larger than the sum of its proper divisors (79897441150).

99865987370 is a wasteful number, since it uses less digits than its factorization.

99865987370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258409.

The product of its (nonzero) digits is 205752960, while the sum is 71.

The spelling of 99865987370 in words is "ninety-nine billion, eight hundred sixty-five million, nine hundred eighty-seven thousand, three hundred seventy".