80766439037 has 4 divisors (see below), whose sum is σ = 80880355740. Its totient is φ = 80652522336.

The previous prime is 80766439021. The next prime is 80766439129. The reversal of 80766439037 is 73093466708.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29231082841 + 51535356196 = 170971^2 + 227014^2 .

It is a cyclic number.

It is not a de Polignac number, because 80766439037 - 2⁴ = 80766439021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80766439037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80766433037) 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 3 ways as a sum of consecutive naturals, for example, 56957288 + ... + 56958705.

It is an arithmetic number, because the mean of its divisors is an integer number (20220088935).

Almost surely, 2^80766439037 is an apocalyptic number.

It is an amenable number.

80766439037 is a deficient number, since it is larger than the sum of its proper divisors (113916703).

80766439037 is a wasteful number, since it uses less digits than its factorization.

80766439037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113916702.

The product of its (nonzero) digits is 4572288, while the sum is 53.

The spelling of 80766439037 in words is "eighty billion, seven hundred sixty-six million, four hundred thirty-nine thousand, thirty-seven".