80989779341 has 4 divisors (see below), whose sum is σ = 81352962432. Its totient is φ = 80626596252.

The previous prime is 80989779331. The next prime is 80989779379. The reversal of 80989779341 is 14397798908.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80989779341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80989779331) 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 3 ways as a sum of consecutive naturals, for example, 181591211 + ... + 181591656.

It is an arithmetic number, because the mean of its divisors is an integer number (20338240608).

Almost surely, 2^80989779341 is an apocalyptic number.

It is an amenable number.

80989779341 is a deficient number, since it is larger than the sum of its proper divisors (363183091).

80989779341 is a wasteful number, since it uses less digits than its factorization.

80989779341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363183090.

The product of its (nonzero) digits is 27433728, while the sum is 65.

The spelling of 80989779341 in words is "eighty billion, nine hundred eighty-nine million, seven hundred seventy-nine thousand, three hundred forty-one".