99894633649899 has 16 divisors (see below), whose sum is σ = 145318000472064. Its totient is φ = 60535237560800.

The previous prime is 99894633649891. The next prime is 99894633649949.

It is a happy number.

99894633649899 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 99894633649899 - 2³ = 99894633649891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99894633649891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173825067 + ... + 174398804.

It is an arithmetic number, because the mean of its divisors is an integer number (9082375029504).

Almost surely, 2^{99894633649899} is an apocalyptic number.

99894633649899 is a deficient number, since it is larger than the sum of its proper divisors (45423366822165).

99894633649899 is a wasteful number, since it uses less digits than its factorization.

99894633649899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348232578.

The product of its digits is 176319369216, while the sum is 96.

The spelling of 99894633649899 in words is "ninety-nine trillion, eight hundred ninety-four billion, six hundred thirty-three million, six hundred forty-nine thousand, eight hundred ninety-nine".