173264406761 has 2 divisors, whose sum is σ = 173264406762. Its totient is φ = 173264406760.

The previous prime is 173264406713. The next prime is 173264406767. The reversal of 173264406761 is 167604462371.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102572232361 + 70692174400 = 320269^2 + 265880^2 .

It is an emirp because it is prime and its reverse (167604462371) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 173264406761 - 2²² = 173260212457 is a prime.

It is a super-2 number, since 2×173264406761² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (173264406767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86632203380 + 86632203381.

It is an arithmetic number, because the mean of its divisors is an integer number (86632203381).

Almost surely, 2^173264406761 is an apocalyptic number.

It is an amenable number.

173264406761 is a deficient number, since it is larger than the sum of its proper divisors (1).

173264406761 is an equidigital number, since it uses as much as digits as its factorization.

173264406761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The spelling of 173264406761 in words is "one hundred seventy-three billion, two hundred sixty-four million, four hundred six thousand, seven hundred sixty-one".