745426609689 has 8 divisors (see below), whose sum is σ = 1012655017152. Its totient is φ = 487574637680.

The previous prime is 745426609637. The next prime is 745426609723. The reversal of 745426609689 is 986906624547.

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 745426609689 - 2¹² = 745426605593 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (745426609589) 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, 2344108677 + ... + 2344108994.

It is an arithmetic number, because the mean of its divisors is an integer number (126581877144).

Almost surely, 2^745426609689 is an apocalyptic number.

It is an amenable number.

745426609689 is a deficient number, since it is larger than the sum of its proper divisors (267228407463).

745426609689 is a wasteful number, since it uses less digits than its factorization.

745426609689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688217727.

The product of its (nonzero) digits is 156764160, while the sum is 66.

The spelling of 745426609689 in words is "seven hundred forty-five billion, four hundred twenty-six million, six hundred nine thousand, six hundred eighty-nine".