80686266752 has 128 divisors (see below), whose sum is σ = 198730076160. Its totient is φ = 31775680512.

The previous prime is 80686266733. The next prime is 80686266797. The reversal of 80686266752 is 25766268608.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2581973 + ... + 2613035.

It is an arithmetic number, because the mean of its divisors is an integer number (1552578720).

Almost surely, 2^80686266752 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 80686266752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99365038080).

80686266752 is an abundant number, since it is smaller than the sum of its proper divisors (118043809408).

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

80686266752 is a wasteful number, since it uses less digits than its factorization.

80686266752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31320 (or 31308 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 56.

The spelling of 80686266752 in words is "eighty billion, six hundred eighty-six million, two hundred sixty-six thousand, seven hundred fifty-two".