80621726976 has 288 divisors, whose sum is σ = 288502260480. Its totient is φ = 21679570944.

The previous prime is 80621726963. The next prime is 80621726981. The reversal of 80621726976 is 67962712608.

80621726976 is a `hidden beast` number, since 8 + 0 + 621 + 7 + 2 + 6 + 9 + 7 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×80621726976² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 773520 + ... + 871536.

It is an arithmetic number, because the mean of its divisors is an integer number (1001743960).

Almost surely, 2^80621726976 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 80621726976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144251130240).

80621726976 is an abundant number, since it is smaller than the sum of its proper divisors (207880533504).

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

80621726976 is a wasteful number, since it uses less digits than its factorization.

80621726976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98066 (or 98046 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 80621726976 in words is "eighty billion, six hundred twenty-one million, seven hundred twenty-six thousand, nine hundred seventy-six".