80798377820 has 24 divisors (see below), whose sum is σ = 169682857344. Its totient is φ = 32318158016.

The previous prime is 80798377783. The next prime is 80798377841. The reversal of 80798377820 is 2877389708.

It is a self number, because there is not a number n which added to its sum of digits gives 80798377820.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 654677 + ... + 768243.

It is an arithmetic number, because the mean of its divisors is an integer number (7070119056).

Almost surely, 2^80798377820 is an apocalyptic number.

It is an amenable number.

80798377820 is an abundant number, since it is smaller than the sum of its proper divisors (88884479524).

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

80798377820 is a wasteful number, since it uses less digits than its factorization.

80798377820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149149 (or 149147 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 59.

The spelling of 80798377820 in words is "eighty billion, seven hundred ninety-eight million, three hundred seventy-seven thousand, eight hundred twenty".