745194660609 has 64 divisors (see below), whose sum is σ = 1248725237760. Its totient is φ = 385696157760.

The previous prime is 745194660601. The next prime is 745194660631. The reversal of 745194660609 is 906066491547.

It is not a de Polignac number, because 745194660609 - 2³ = 745194660601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (745194660601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 663694 + ... + 1389560.

It is an arithmetic number, because the mean of its divisors is an integer number (19511331840).

Almost surely, 2^745194660609 is an apocalyptic number.

It is an amenable number.

745194660609 is a deficient number, since it is larger than the sum of its proper divisors (503530577151).

745194660609 is a wasteful number, since it uses less digits than its factorization.

745194660609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726010.

The product of its (nonzero) digits is 9797760, while the sum is 57.

The spelling of 745194660609 in words is "seven hundred forty-five billion, one hundred ninety-four million, six hundred sixty thousand, six hundred nine".