745989989547 has 32 divisors (see below), whose sum is σ = 1188521786880. Its totient is φ = 410847019520.

The previous prime is 745989989543. The next prime is 745989989561.

It is a happy number.

745989989547 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 745989989547 - 2² = 745989989543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 745989989547.

It is not an unprimeable number, because it can be changed into a prime (745989989543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22910463 + ... + 22943000.

It is an arithmetic number, because the mean of its divisors is an integer number (37141305840).

Almost surely, 2^745989989547 is an apocalyptic number.

745989989547 is a deficient number, since it is larger than the sum of its proper divisors (442531797333).

745989989547 is a wasteful number, since it uses less digits than its factorization.

745989989547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45853523.

The product of its digits is 8230118400, while the sum is 84.

The spelling of 745989989547 in words is "seven hundred forty-five billion, nine hundred eighty-nine million, nine hundred eighty-nine thousand, five hundred forty-seven".