80781821079264 has 192 divisors, whose sum is σ = 258075798926400. Its totient is φ = 24469408825344.

The previous prime is 80781821079259. The next prime is 80781821079283. The reversal of 80781821079264 is 46297012818708.

80781821079264 is a `hidden beast` number, since 80 + 7 + 8 + 18 + 210 + 79 + 264 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94399077 + ... + 95250980.

It is an arithmetic number, because the mean of its divisors is an integer number (1344144786075).

Almost surely, 2^{80781821079264} is an apocalyptic number.

It is an amenable number.

80781821079264 is an abundant number, since it is smaller than the sum of its proper divisors (177293977847136).

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

80781821079264 is a wasteful number, since it uses less digits than its factorization.

80781821079264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189650122 (or 189650108 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 63.

The spelling of 80781821079264 in words is "eighty trillion, seven hundred eighty-one billion, eight hundred twenty-one million, seventy-nine thousand, two hundred sixty-four".