80697849966720 has 576 divisors, whose sum is σ = 324550039170240. Its totient is φ = 18422757642240.

The previous prime is 80697849966689. The next prime is 80697849966743. The reversal of 80697849966720 is 2766994879608.

80697849966720 is a `hidden beast` number, since 8 + 0 + 69 + 7 + 8 + 499 + 6 + 67 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a super-2 number, since 2×80697849966720² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80697849966720.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 232109815 + ... + 232457225.

It is an arithmetic number, because the mean of its divisors is an integer number (563454929115).

Almost surely, 2^{80697849966720} is an apocalyptic number.

80697849966720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80697849966720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162275019585120).

80697849966720 is an abundant number, since it is smaller than the sum of its proper divisors (243852189203520).

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

80697849966720 is a wasteful number, since it uses less digits than its factorization.

80697849966720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348273 (or 348251 counting only the distinct ones).

The product of its (nonzero) digits is 3950456832, while the sum is 81.

The spelling of 80697849966720 in words is "eighty trillion, six hundred ninety-seven billion, eight hundred forty-nine million, nine hundred sixty-six thousand, seven hundred twenty".