173009854081 has 2 divisors, whose sum is σ = 173009854082. Its totient is φ = 173009854080.

The previous prime is 173009854027. The next prime is 173009854151. The reversal of 173009854081 is 180458900371.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173001924225 + 7929856 = 415935^2 + 2816^2 .

It is a cyclic number.

It is not a de Polignac number, because 173009854081 - 2²⁹ = 172472983169 is a prime.

It is a super-2 number, since 2×173009854081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (173009854781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86504927040 + 86504927041.

It is an arithmetic number, because the mean of its divisors is an integer number (86504927041).

Almost surely, 2^173009854081 is an apocalyptic number.

It is an amenable number.

173009854081 is a deficient number, since it is larger than the sum of its proper divisors (1).

173009854081 is an equidigital number, since it uses as much as digits as its factorization.

173009854081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 173009854081 in words is "one hundred seventy-three billion, nine million, eight hundred fifty-four thousand, eighty-one".