80397966920220 has 144 divisors (see below), whose sum is σ = 255185897541120. Its totient is φ = 20450183707008.

The previous prime is 80397966920149. The next prime is 80397966920233. The reversal of 80397966920220 is 2202966979308.

80397966920220 is a `hidden beast` number, since 80 + 397 + 9 + 66 + 92 + 0 + 2 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25560814 + ... + 28533333.

It is an arithmetic number, because the mean of its divisors is an integer number (1772124288480).

Almost surely, 2^{80397966920220} is an apocalyptic number.

It is an amenable number.

80397966920220 is an abundant number, since it is smaller than the sum of its proper divisors (174787930620900).

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

80397966920220 is a wasteful number, since it uses less digits than its factorization.

80397966920220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54094544 (or 54094539 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 63.

The spelling of 80397966920220 in words is "eighty trillion, three hundred ninety-seven billion, nine hundred sixty-six million, nine hundred twenty thousand, two hundred twenty".