80911116 has 192 divisors, whose sum is σ = 255897600. Its totient is φ = 21902400.

The previous prime is 80911099. The next prime is 80911121. The reversal of 80911116 is 61111908.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 80911116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2610021 + ... + 2610051.

It is an arithmetic number, because the mean of its divisors is an integer number (1332800).

Almost surely, 2^80911116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80911116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127948800).

80911116 is an abundant number, since it is smaller than the sum of its proper divisors (174986484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80911116 is a wasteful number, since it uses less digits than its factorization.

80911116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 27.

The square root of 80911116 is about 8995.0606445982. The cubic root of 80911116 is about 432.5165503150.

The spelling of 80911116 in words is "eighty million, nine hundred eleven thousand, one hundred sixteen".