80839549681 has 64 divisors (see below), whose sum is σ = 93486182400. Its totient is φ = 69271488000.

The previous prime is 80839549673. The next prime is 80839549711. The reversal of 80839549681 is 18694593808.

It is not a de Polignac number, because 80839549681 - 2³ = 80839549673 is a prime.

It is a super-2 number, since 2×80839549681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80839549601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 346950741 + ... + 346950973.

It is an arithmetic number, because the mean of its divisors is an integer number (1460721600).

Almost surely, 2^80839549681 is an apocalyptic number.

It is an amenable number.

80839549681 is a deficient number, since it is larger than the sum of its proper divisors (12646632719).

80839549681 is a wasteful number, since it uses less digits than its factorization.

80839549681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550.

The product of its (nonzero) digits is 14929920, while the sum is 61.

The spelling of 80839549681 in words is "eighty billion, eight hundred thirty-nine million, five hundred forty-nine thousand, six hundred eighty-one".