173632050421 has 2 divisors, whose sum is σ = 173632050422. Its totient is φ = 173632050420.

The previous prime is 173632050379. The next prime is 173632050433. The reversal of 173632050421 is 124050236371.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101451168196 + 72180882225 = 318514^2 + 268665^2 .

It is a cyclic number.

It is not a de Polignac number, because 173632050421 - 2⁹ = 173632049909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173632050451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86816025210 + 86816025211.

It is an arithmetic number, because the mean of its divisors is an integer number (86816025211).

Almost surely, 2^173632050421 is an apocalyptic number.

It is an amenable number.

173632050421 is a deficient number, since it is larger than the sum of its proper divisors (1).

173632050421 is an equidigital number, since it uses as much as digits as its factorization.

173632050421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

Adding to 173632050421 its reverse (124050236371), we get a palindrome (297682286792).

The spelling of 173632050421 in words is "one hundred seventy-three billion, six hundred thirty-two million, fifty thousand, four hundred twenty-one".