80870885720 has 32 divisors (see below), whose sum is σ = 182055988800. Its totient is φ = 32331199488.

The previous prime is 80870885717. The next prime is 80870885729. The reversal of 80870885720 is 2758807808.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80870885729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459584 + ... + 610703.

It is an arithmetic number, because the mean of its divisors is an integer number (5689249650).

Almost surely, 2^80870885720 is an apocalyptic number.

It is an amenable number.

80870885720 is an abundant number, since it is smaller than the sum of its proper divisors (101185103080).

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

80870885720 is a wasteful number, since it uses less digits than its factorization.

80870885720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072187 (or 1072183 counting only the distinct ones).

The product of its (nonzero) digits is 2007040, while the sum is 53.

The spelling of 80870885720 in words is "eighty billion, eight hundred seventy million, eight hundred eighty-five thousand, seven hundred twenty".