80767342666 has 4 divisors (see below), whose sum is σ = 121151014002. Its totient is φ = 40383671332.

The previous prime is 80767342657. The next prime is 80767342679. The reversal of 80767342666 is 66624376708.

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

It can be written as a sum of positive squares in only one way, i.e., 70103682441 + 10663660225 = 264771^2 + 103265^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20191835665 + ... + 20191835668.

Almost surely, 2^80767342666 is an apocalyptic number.

80767342666 is a deficient number, since it is larger than the sum of its proper divisors (40383671336).

80767342666 is a wasteful number, since it uses less digits than its factorization.

80767342666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40383671335.

The product of its (nonzero) digits is 12192768, while the sum is 55.

The spelling of 80767342666 in words is "eighty billion, seven hundred sixty-seven million, three hundred forty-two thousand, six hundred sixty-six".