172065558407 has 2 divisors, whose sum is σ = 172065558408. Its totient is φ = 172065558406.

The previous prime is 172065558347. The next prime is 172065558419. The reversal of 172065558407 is 704855560271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172065558407 - 2¹⁶ = 172065492871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172065558487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86032779203 + 86032779204.

It is an arithmetic number, because the mean of its divisors is an integer number (86032779204).

Almost surely, 2^172065558407 is an apocalyptic number.

172065558407 is a deficient number, since it is larger than the sum of its proper divisors (1).

172065558407 is an equidigital number, since it uses as much as digits as its factorization.

172065558407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352000, while the sum is 50.

The spelling of 172065558407 in words is "one hundred seventy-two billion, sixty-five million, five hundred fifty-eight thousand, four hundred seven".