80787355836 has 96 divisors (see below), whose sum is σ = 214695968256. Its totient is φ = 23404128000.

The previous prime is 80787355829. The next prime is 80787355837. The reversal of 80787355836 is 63855378708.

It is a self number, because there is not a number n which added to its sum of digits gives 80787355836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80787355837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6736966 + ... + 6748946.

It is an arithmetic number, because the mean of its divisors is an integer number (2236416336).

Almost surely, 2^80787355836 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 80787355836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107347984128).

80787355836 is an abundant number, since it is smaller than the sum of its proper divisors (133908612420).

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

80787355836 is a wasteful number, since it uses less digits than its factorization.

80787355836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14243 (or 14241 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 60.

The spelling of 80787355836 in words is "eighty billion, seven hundred eighty-seven million, three hundred fifty-five thousand, eight hundred thirty-six".