172990273465 has 8 divisors (see below), whose sum is σ = 218514029760. Its totient is φ = 131108417712.

The previous prime is 172990273459. The next prime is 172990273487. The reversal of 172990273465 is 564372099271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172990273465 - 2²¹ = 172988176313 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 910475029 + ... + 910475218.

It is an arithmetic number, because the mean of its divisors is an integer number (27314253720).

Almost surely, 2^172990273465 is an apocalyptic number.

It is an amenable number.

172990273465 is a deficient number, since it is larger than the sum of its proper divisors (45523756295).

172990273465 is a wasteful number, since it uses less digits than its factorization.

172990273465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820950271.

The product of its (nonzero) digits is 5715360, while the sum is 55.

The spelling of 172990273465 in words is "one hundred seventy-two billion, nine hundred ninety million, two hundred seventy-three thousand, four hundred sixty-five".