80786821458 has 24 divisors (see below), whose sum is σ = 187953013872. Its totient is φ = 23081948904.

The previous prime is 80786821429. The next prime is 80786821481. The reversal of 80786821458 is 85412868708.

It is a junction number, because it is equal to n+sod(n) for n = 80786821398 and 80786821407.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137392260 + ... + 137392847.

It is an arithmetic number, because the mean of its divisors is an integer number (7831375578).

Almost surely, 2^80786821458 is an apocalyptic number.

80786821458 is an abundant number, since it is smaller than the sum of its proper divisors (107166192414).

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

80786821458 is a wasteful number, since it uses less digits than its factorization.

80786821458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274785126 (or 274785119 counting only the distinct ones).

The product of its (nonzero) digits is 6881280, while the sum is 57.

The spelling of 80786821458 in words is "eighty billion, seven hundred eighty-six million, eight hundred twenty-one thousand, four hundred fifty-eight".