80666539200 has 1260 divisors, whose sum is σ = 334759645440. Its totient is φ = 19020718080.

The previous prime is 80666539139. The next prime is 80666539253. The reversal of 80666539200 is 293566608.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 635169537 + ... + 635169663.

Almost surely, 2^80666539200 is an apocalyptic number.

80666539200 is a gapful number since it is divisible by the number (80) 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 80666539200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167379822720).

80666539200 is an abundant number, since it is smaller than the sum of its proper divisors (254093106240).

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

80666539200 is a wasteful number, since it uses less digits than its factorization.

80666539200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 80666539200 in words is "eighty billion, six hundred sixty-six million, five hundred thirty-nine thousand, two hundred".