80238976985 has 4 divisors (see below), whose sum is σ = 96286772388. Its totient is φ = 64191181584.

The previous prime is 80238976877. The next prime is 80238976997. The reversal of 80238976985 is 58967983208.

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 54043230784 + 26195746201 = 232472^2 + 161851^2 .

It is a cyclic number.

It is not a de Polignac number, because 80238976985 - 2¹² = 80238972889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8023897694 + ... + 8023897703.

It is an arithmetic number, because the mean of its divisors is an integer number (24071693097).

Almost surely, 2^80238976985 is an apocalyptic number.

It is an amenable number.

80238976985 is a deficient number, since it is larger than the sum of its proper divisors (16047795403).

80238976985 is a wasteful number, since it uses less digits than its factorization.

80238976985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16047795402.

The product of its (nonzero) digits is 52254720, while the sum is 65.

The spelling of 80238976985 in words is "eighty billion, two hundred thirty-eight million, nine hundred seventy-six thousand, nine hundred eighty-five".