99991444419999 has 36 divisors (see below), whose sum is σ = 158769610881336. Its totient is φ = 60595652964000.

The previous prime is 99991444419961. The next prime is 99991444420019.

99991444419999 is a `hidden beast` number, since 9 + 9 + 99 + 14 + 4 + 4 + 419 + 9 + 99 = 666.

99991444419999 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99991444419999 - 2²⁹ = 99990907549087 is a prime.

It is a super-2 number, since 2×99991444419999² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99991444409999) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8704684 + ... + 16605854.

It is an arithmetic number, because the mean of its divisors is an integer number (4410266968926).

Almost surely, 2^{99991444419999} is an apocalyptic number.

99991444419999 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

99991444419999 is a deficient number, since it is larger than the sum of its proper divisors (58778166461337).

99991444419999 is a wasteful number, since it uses less digits than its factorization.

99991444419999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7912820 (or 7912806 counting only the distinct ones).

The product of its digits is 11019960576, while the sum is 90.

The spelling of 99991444419999 in words is "ninety-nine trillion, nine hundred ninety-one billion, four hundred forty-four million, four hundred nineteen thousand, nine hundred ninety-nine".