172247121374 has 16 divisors (see below), whose sum is σ = 270461638656. Its totient is φ = 82171500600.

The previous prime is 172247121337. The next prime is 172247121377. The reversal of 172247121374 is 473121742271.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172247121377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19560242 + ... + 19569045.

It is an arithmetic number, because the mean of its divisors is an integer number (16903852416).

Almost surely, 2^172247121374 is an apocalyptic number.

172247121374 is a deficient number, since it is larger than the sum of its proper divisors (98214517282).

172247121374 is a wasteful number, since it uses less digits than its factorization.

172247121374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39129391.

The product of its digits is 131712, while the sum is 41.

The spelling of 172247121374 in words is "one hundred seventy-two billion, two hundred forty-seven million, one hundred twenty-one thousand, three hundred seventy-four".