80666455466608 has 80 divisors (see below), whose sum is σ = 171244995199200. Its totient is φ = 36506285834240.

The previous prime is 80666455466573. The next prime is 80666455466651.

80666455466608 is nontrivially palindromic in base 10.

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, 562106928 + ... + 562250416.

It is an arithmetic number, because the mean of its divisors is an integer number (2140562439990).

Almost surely, 2^{80666455466608} is an apocalyptic number.

80666455466608 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80666455466608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85622497599600).

80666455466608 is an abundant number, since it is smaller than the sum of its proper divisors (90578539732592).

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

80666455466608 is a wasteful number, since it uses less digits than its factorization.

80666455466608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157450 (or 157444 counting only the distinct ones).

The product of its (nonzero) digits is 1194393600, while the sum is 70.

The spelling of 80666455466608 in words is "eighty trillion, six hundred sixty-six billion, four hundred fifty-five million, four hundred sixty-six thousand, six hundred eight".