80815723860 has 48 divisors (see below), whose sum is σ = 229010354496. Its totient is φ = 21291209472.

The previous prime is 80815723837. The next prime is 80815723867. The reversal of 80815723860 is 6832751808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80815723867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8109049 + ... + 8119008.

It is an arithmetic number, because the mean of its divisors is an integer number (4771049052).

Almost surely, 2^80815723860 is an apocalyptic number.

It is an amenable number.

80815723860 is an abundant number, since it is smaller than the sum of its proper divisors (148194630636).

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

80815723860 is a wasteful number, since it uses less digits than its factorization.

80815723860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16228152 (or 16228150 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 80815723860 in words is "eighty billion, eight hundred fifteen million, seven hundred twenty-three thousand, eight hundred sixty".