80906441739 has 4 divisors (see below), whose sum is σ = 107875255656. Its totient is φ = 53937627824.

The previous prime is 80906441723. The next prime is 80906441741. The reversal of 80906441739 is 93714460908.

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

It is a cyclic number.

It is not a de Polignac number, because 80906441739 - 2⁴ = 80906441723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80906441691 and 80906441700.

It is not an unprimeable number, because it can be changed into a prime (80906401739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13484406954 + ... + 13484406959.

It is an arithmetic number, because the mean of its divisors is an integer number (26968813914).

Almost surely, 2^80906441739 is an apocalyptic number.

80906441739 is a deficient number, since it is larger than the sum of its proper divisors (26968813917).

80906441739 is a wasteful number, since it uses less digits than its factorization.

80906441739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26968813916.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 80906441739 in words is "eighty billion, nine hundred six million, four hundred forty-one thousand, seven hundred thirty-nine".