76538886672173 has 2 divisors, whose sum is σ = 76538886672174. Its totient is φ = 76538886672172.

The previous prime is 76538886672169. The next prime is 76538886672221. The reversal of 76538886672173 is 37127668883567.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40406020304329 + 36132866367844 = 6356573^2 + 6011062^2 .

It is an emirp because it is prime and its reverse (37127668883567) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76538886672173 - 2² = 76538886672169 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 76538886672094 and 76538886672103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76538889672173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38269443336086 + 38269443336087.

It is an arithmetic number, because the mean of its divisors is an integer number (38269443336087).

Almost surely, 2^{76538886672173} is an apocalyptic number.

It is an amenable number.

76538886672173 is a deficient number, since it is larger than the sum of its proper divisors (1).

76538886672173 is an equidigital number, since it uses as much as digits as its factorization.

76538886672173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3413975040, while the sum is 77.

The spelling of 76538886672173 in words is "seventy-six trillion, five hundred thirty-eight billion, eight hundred eighty-six million, six hundred seventy-two thousand, one hundred seventy-three".