172388434101 has 64 divisors (see below), whose sum is σ = 265990932480. Its totient is φ = 98424564480.

The previous prime is 172388434067. The next prime is 172388434117. The reversal of 172388434101 is 101434883271.

It is not a de Polignac number, because 172388434101 - 2⁹ = 172388433589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172388434151) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8578896 + ... + 8598966.

It is an arithmetic number, because the mean of its divisors is an integer number (4156108320).

Almost surely, 2^172388434101 is an apocalyptic number.

It is an amenable number.

172388434101 is a deficient number, since it is larger than the sum of its proper divisors (93602498379).

172388434101 is a wasteful number, since it uses less digits than its factorization.

172388434101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20346.

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 172388434101 in words is "one hundred seventy-two billion, three hundred eighty-eight million, four hundred thirty-four thousand, one hundred one".