80118617867 has 2 divisors, whose sum is σ = 80118617868. Its totient is φ = 80118617866.

The previous prime is 80118617863. The next prime is 80118617879. The reversal of 80118617867 is 76871681108.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80118617867 - 2² = 80118617863 is a prime.

It is not a weakly prime, because it can be changed into another prime (80118617863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40059308933 + 40059308934.

It is an arithmetic number, because the mean of its divisors is an integer number (40059308934).

Almost surely, 2^80118617867 is an apocalyptic number.

80118617867 is a deficient number, since it is larger than the sum of its proper divisors (1).

80118617867 is an equidigital number, since it uses as much as digits as its factorization.

80118617867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 903168, while the sum is 53.

The spelling of 80118617867 in words is "eighty billion, one hundred eighteen million, six hundred seventeen thousand, eight hundred sixty-seven".