77023755173 has 2 divisors, whose sum is σ = 77023755174. Its totient is φ = 77023755172.

The previous prime is 77023755089. The next prime is 77023755199. The reversal of 77023755173 is 37155732077.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40667562244 + 36356192929 = 201662^2 + 190673^2 .

It is a cyclic number.

It is not a de Polignac number, because 77023755173 - 2⁸ = 77023754917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77023755973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38511877586 + 38511877587.

It is an arithmetic number, because the mean of its divisors is an integer number (38511877587).

Almost surely, 2^77023755173 is an apocalyptic number.

It is an amenable number.

77023755173 is a deficient number, since it is larger than the sum of its proper divisors (1).

77023755173 is an equidigital number, since it uses as much as digits as its factorization.

77023755173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080450, while the sum is 47.

The spelling of 77023755173 in words is "seventy-seven billion, twenty-three million, seven hundred fifty-five thousand, one hundred seventy-three".