172194145012 has 12 divisors (see below), whose sum is σ = 301351111236. Its totient is φ = 86093827520.

The previous prime is 172194144971. The next prime is 172194145073. The reversal of 172194145012 is 210541491271.

It can be written as a sum of positive squares in 2 ways, for example, as 13283484516 + 158910660496 = 115254^2 + 398636^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689833 + ... + 905680.

It is an arithmetic number, because the mean of its divisors is an integer number (25112592603).

Almost surely, 2^172194145012 is an apocalyptic number.

It is an amenable number.

172194145012 is a deficient number, since it is larger than the sum of its proper divisors (129156966224).

172194145012 is a wasteful number, since it uses less digits than its factorization.

172194145012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622498 (or 1622496 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

It can be divided in two parts, 172194 and 145012, that added together give a triangular number (317206 = T₇₉₆).

The spelling of 172194145012 in words is "one hundred seventy-two billion, one hundred ninety-four million, one hundred forty-five thousand, twelve".