173187472373 has 2 divisors, whose sum is σ = 173187472374. Its totient is φ = 173187472372.

The previous prime is 173187472343. The next prime is 173187472379. The reversal of 173187472373 is 373274781371.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124451611729 + 48735860644 = 352777^2 + 220762^2 .

It is a cyclic number.

It is not a de Polignac number, because 173187472373 - 2⁶ = 173187472309 is a prime.

It is a super-2 number, since 2×173187472373² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173187472379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86593736186 + 86593736187.

It is an arithmetic number, because the mean of its divisors is an integer number (86593736187).

Almost surely, 2^173187472373 is an apocalyptic number.

It is an amenable number.

173187472373 is a deficient number, since it is larger than the sum of its proper divisors (1).

173187472373 is an equidigital number, since it uses as much as digits as its factorization.

173187472373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4148928, while the sum is 53.

The spelling of 173187472373 in words is "one hundred seventy-three billion, one hundred eighty-seven million, four hundred seventy-two thousand, three hundred seventy-three".