745245312165217 has 8 divisors (see below), whose sum is σ = 745883452965600. Its totient is φ = 744607275259584.

The previous prime is 745245312165203. The next prime is 745245312165223. The reversal of 745245312165217 is 712561213542547.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745245312165217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745245312165287) 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, 11617992 + ... + 40317097.

It is an arithmetic number, because the mean of its divisors is an integer number (93235431620700).

Almost surely, 2^{745245312165217} is an apocalyptic number.

It is an amenable number.

745245312165217 is a deficient number, since it is larger than the sum of its proper divisors (638140800383).

745245312165217 is a wasteful number, since it uses less digits than its factorization.

745245312165217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51947375.

The product of its digits is 14112000, while the sum is 55.

The spelling of 745245312165217 in words is "seven hundred forty-five trillion, two hundred forty-five billion, three hundred twelve million, one hundred sixty-five thousand, two hundred seventeen".