80021816622 has 80 divisors (see below), whose sum is σ = 197102657664. Its totient is φ = 24063858000.

The previous prime is 80021816603. The next prime is 80021816627. The reversal of 80021816622 is 22661812008.

80021816622 is a `hidden beast` number, since 8 + 0 + 0 + 2 + 18 + 16 + 622 = 666.

It is a super-2 number, since 2×80021816622² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80021816627) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 62047 + ... + 404837.

Almost surely, 2^80021816622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80021816622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98551328832).

80021816622 is an abundant number, since it is smaller than the sum of its proper divisors (117080841042).

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

80021816622 is a wasteful number, since it uses less digits than its factorization.

80021816622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342947 (or 342938 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 80021816622 in words is "eighty billion, twenty-one million, eight hundred sixteen thousand, six hundred twenty-two".