172938105029 has 2 divisors, whose sum is σ = 172938105030. Its totient is φ = 172938105028.

The previous prime is 172938105017. The next prime is 172938105037. The reversal of 172938105029 is 920501839271.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139913402500 + 33024702529 = 374050^2 + 181727^2 .

It is a cyclic number.

It is not a de Polignac number, because 172938105029 - 2¹⁶ = 172938039493 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172938105079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86469052514 + 86469052515.

It is an arithmetic number, because the mean of its divisors is an integer number (86469052515).

Almost surely, 2^172938105029 is an apocalyptic number.

It is an amenable number.

172938105029 is a deficient number, since it is larger than the sum of its proper divisors (1).

172938105029 is an equidigital number, since it uses as much as digits as its factorization.

172938105029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 172938105029 in words is "one hundred seventy-two billion, nine hundred thirty-eight million, one hundred five thousand, twenty-nine".