8991411709894 has 8 divisors (see below), whose sum is σ = 13567878748368. Its totient is φ = 4468785460440.

The previous prime is 8991411709859. The next prime is 8991411709913. The reversal of 8991411709894 is 4989071141998.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13460196837 + ... + 13460197504.

It is an arithmetic number, because the mean of its divisors is an integer number (1695984843546).

Almost surely, 2^{8991411709894} is an apocalyptic number.

8991411709894 is a deficient number, since it is larger than the sum of its proper divisors (4576467038474).

8991411709894 is a wasteful number, since it uses less digits than its factorization.

8991411709894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26920394510.

The product of its (nonzero) digits is 47029248, while the sum is 70.

The spelling of 8991411709894 in words is "eight trillion, nine hundred ninety-one billion, four hundred eleven million, seven hundred nine thousand, eight hundred ninety-four".