80809907399064 has 48 divisors (see below), whose sum is σ = 218886077329920. Its totient is φ = 26933446697280.

The previous prime is 80809907398993. The next prime is 80809907399069. The reversal of 80809907399064 is 46099370990808.

It is a super-2 number, since 2×80809907399064² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 80809907398983 and 80809907399001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80809907399069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65827227 + ... + 67043594.

It is an arithmetic number, because the mean of its divisors is an integer number (4560126611040).

Almost surely, 2^{80809907399064} is an apocalyptic number.

It is an amenable number.

80809907399064 is an abundant number, since it is smaller than the sum of its proper divisors (138076169930856).

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

80809907399064 is a wasteful number, since it uses less digits than its factorization.

80809907399064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132879280 (or 132879273 counting only the distinct ones).

The product of its (nonzero) digits is 211631616, while the sum is 72.

The spelling of 80809907399064 in words is "eighty trillion, eight hundred nine billion, nine hundred seven million, three hundred ninety-nine thousand, sixty-four".