80623219842 has 72 divisors (see below), whose sum is σ = 192084672780. Its totient is φ = 24421478400.

The previous prime is 80623219777. The next prime is 80623219847. The reversal of 80623219842 is 24891232608.

80623219842 is a `hidden beast` number, since 8 + 0 + 623 + 2 + 19 + 8 + 4 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 77996759841 + 2626460001 = 279279^2 + 51249^2 .

It is not an unprimeable number, because it can be changed into a prime (80623219847) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6896242 + ... + 6907922.

Almost surely, 2^80623219842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80623219842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96042336390).

80623219842 is an abundant number, since it is smaller than the sum of its proper divisors (111461452938).

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

80623219842 is a wasteful number, since it uses less digits than its factorization.

80623219842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14880 (or 14866 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 80623219842 in words is "eighty billion, six hundred twenty-three million, two hundred nineteen thousand, eight hundred forty-two".