80543616 has 64 divisors (see below), whose sum is σ = 214914000. Its totient is φ = 26726400.

The previous prime is 80543597. The next prime is 80543633. The reversal of 80543616 is 61634508.

It is a tau number, because it is divible by the number of its divisors (64).

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, 133716 + ... + 134316.

Almost surely, 2^80543616 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 80543616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107457000).

80543616 is an abundant number, since it is smaller than the sum of its proper divisors (134370384).

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

80543616 is a wasteful number, since it uses less digits than its factorization.

80543616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967 (or 955 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 80543616 is about 8974.6095179679. The cubic root of 80543616 is about 431.8607232776.

The spelling of 80543616 in words is "eighty million, five hundred forty-three thousand, six hundred sixteen".