80547985664 has 72 divisors (see below), whose sum is σ = 164031981120. Its totient is φ = 39464142848.

The previous prime is 80547985633. The next prime is 80547985681. The reversal of 80547985664 is 46658974508.

It is a junction number, because it is equal to n+sod(n) for n = 80547985597 and 80547985606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4779557 + ... + 4796379.

It is an arithmetic number, because the mean of its divisors is an integer number (2278221960).

Almost surely, 2^80547985664 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 80547985664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82015990560).

80547985664 is an abundant number, since it is smaller than the sum of its proper divisors (83483995456).

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

80547985664 is a wasteful number, since it uses less digits than its factorization.

80547985664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17215 (or 17201 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 62.

The spelling of 80547985664 in words is "eighty billion, five hundred forty-seven million, nine hundred eighty-five thousand, six hundred sixty-four".