80805897072 has 60 divisors (see below), whose sum is σ = 226268528304. Its totient is φ = 26920500480.

The previous prime is 80805897061. The next prime is 80805897077. The reversal of 80805897072 is 27079850808.

It is a super-2 number, since 2×80805897072² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80805897077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110428 + ... + 416900.

Almost surely, 2^80805897072 is an apocalyptic number.

It is an amenable number.

80805897072 is an abundant number, since it is smaller than the sum of its proper divisors (145462631232).

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

80805897072 is a wasteful number, since it uses less digits than its factorization.

80805897072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308318 (or 308309 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The spelling of 80805897072 in words is "eighty billion, eight hundred five million, eight hundred ninety-seven thousand, seventy-two".