99999999991694 has 16 divisors (see below), whose sum is σ = 163636610783616. Its totient is φ = 45454476795000.

The previous prime is 99999999991687. The next prime is 99999999991711. The reversal of 99999999991694 is 49619999999999.

It is a congruent number.

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, 13269569 + ... + 19392819.

It is an arithmetic number, because the mean of its divisors is an integer number (10227288173976).

Almost surely, 2^{99999999991694} is an apocalyptic number.

99999999991694 is a deficient number, since it is larger than the sum of its proper divisors (63636610791922).

99999999991694 is a wasteful number, since it uses less digits than its factorization.

99999999991694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6865591.

The product of its digits is 753145430616, while the sum is 110.

The spelling of 99999999991694 in words is "ninety-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-one thousand, six hundred ninety-four".