80989743872 has 36 divisors (see below), whose sum is σ = 162748185600. Its totient is φ = 40223075328.

The previous prime is 80989743869. The next prime is 80989743929. The reversal of 80989743872 is 27834798908.

It is a super-2 number, since 2×80989743872² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80989743799 and 80989743808.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1023488 + ... + 1099775.

Almost surely, 2^80989743872 is an apocalyptic number.

It is an amenable number.

80989743872 is an abundant number, since it is smaller than the sum of its proper divisors (81758441728).

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

80989743872 is a wasteful number, since it uses less digits than its factorization.

80989743872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123428 (or 2123414 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 65.

The spelling of 80989743872 in words is "eighty billion, nine hundred eighty-nine million, seven hundred forty-three thousand, eight hundred seventy-two".