80812357539 has 16 divisors (see below), whose sum is σ = 110262276000. Its totient is φ = 52627550976.

The previous prime is 80812357499. The next prime is 80812357559. The reversal of 80812357539 is 93575321808.

It is a happy number.

It is not a de Polignac number, because 80812357539 - 2²⁴ = 80795580323 is a prime.

It is a super-2 number, since 2×80812357539² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80812357491 and 80812357500.

It is not an unprimeable number, because it can be changed into a prime (80812357559) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1073314 + ... + 1146135.

It is an arithmetic number, because the mean of its divisors is an integer number (6891392250).

Almost surely, 2^80812357539 is an apocalyptic number.

80812357539 is a deficient number, since it is larger than the sum of its proper divisors (29449918461).

80812357539 is a wasteful number, since it uses less digits than its factorization.

80812357539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219734.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 80812357539 in words is "eighty billion, eight hundred twelve million, three hundred fifty-seven thousand, five hundred thirty-nine".