745909089992 has 16 divisors (see below), whose sum is σ = 1525723138800. Its totient is φ = 339049586320.

The previous prime is 745909089971. The next prime is 745909089997. The reversal of 745909089992 is 299980909547.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (745909089997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4238119742 + ... + 4238119917.

It is an arithmetic number, because the mean of its divisors is an integer number (95357696175).

Almost surely, 2^745909089992 is an apocalyptic number.

It is an amenable number.

745909089992 is an abundant number, since it is smaller than the sum of its proper divisors (779814048808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

745909089992 is a wasteful number, since it uses less digits than its factorization.

745909089992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8476239676 (or 8476239672 counting only the distinct ones).

The product of its (nonzero) digits is 132269760, while the sum is 71.

The spelling of 745909089992 in words is "seven hundred forty-five billion, nine hundred nine million, eighty-nine thousand, nine hundred ninety-two".