80920808100 has 432 divisors, whose sum is σ = 296795378880. Its totient is φ = 18231782400.

The previous prime is 80920808099. The next prime is 80920808123. The reversal of 80920808100 is 180802908.

It is a super-2 number, since 2×80920808100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 9965242 + ... + 9973358.

It is an arithmetic number, because the mean of its divisors is an integer number (687026340).

Almost surely, 2^80920808100 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 80920808100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148397689440).

80920808100 is an abundant number, since it is smaller than the sum of its proper divisors (215874570780).

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

80920808100 is a wasteful number, since it uses less digits than its factorization.

80920808100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8220 (or 8210 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The spelling of 80920808100 in words is "eighty billion, nine hundred twenty million, eight hundred eight thousand, one hundred".