80668140139 has 4 divisors (see below), whose sum is σ = 83270338240. Its totient is φ = 78065942040.

The previous prime is 80668140127. The next prime is 80668140169. The reversal of 80668140139 is 93104186608.

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 80668140139 - 2⁵ = 80668140107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80668140109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1301099004 + ... + 1301099065.

It is an arithmetic number, because the mean of its divisors is an integer number (20817584560).

Almost surely, 2^80668140139 is an apocalyptic number.

80668140139 is a deficient number, since it is larger than the sum of its proper divisors (2602198101).

80668140139 is a wasteful number, since it uses less digits than its factorization.

80668140139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2602198100.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 80668140139 in words is "eighty billion, six hundred sixty-eight million, one hundred forty thousand, one hundred thirty-nine".