80691076730880 has 4992 divisors, whose sum is σ = 380841271050240. Its totient is φ = 15905500692480.

The previous prime is 80691076730879. The next prime is 80691076730917. The reversal of 80691076730880 is 8803767019608.

It is a super-2 number, since 2×80691076730880² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

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 383 ways as a sum of consecutive naturals, for example, 972181647319 + ... + 972181647401.

It is an arithmetic number, because the mean of its divisors is an integer number (76290318720).

Almost surely, 2^{80691076730880} is an apocalyptic number.

80691076730880 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 80691076730880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190420635525120).

80691076730880 is an abundant number, since it is smaller than the sum of its proper divisors (300150194319360).

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

80691076730880 is a wasteful number, since it uses less digits than its factorization.

80691076730880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 80691076730880 in words is "eighty trillion, six hundred ninety-one billion, seventy-six million, seven hundred thirty thousand, eight hundred eighty".