172903219316 has 6 divisors (see below), whose sum is σ = 302580633810. Its totient is φ = 86451609656.

The previous prime is 172903219309. The next prime is 172903219327. The reversal of 172903219316 is 613912309271.

It can be written as a sum of positive squares in only one way, i.e., 143800224100 + 29102995216 = 379210^2 + 170596^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21612902411 + ... + 21612902418.

It is an arithmetic number, because the mean of its divisors is an integer number (50430105635).

Almost surely, 2^172903219316 is an apocalyptic number.

It is an amenable number.

172903219316 is a deficient number, since it is larger than the sum of its proper divisors (129677414494).

172903219316 is a wasteful number, since it uses less digits than its factorization.

172903219316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43225804833 (or 43225804831 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 44.

The spelling of 172903219316 in words is "one hundred seventy-two billion, nine hundred three million, two hundred nineteen thousand, three hundred sixteen".