745981650673 has 16 divisors (see below), whose sum is σ = 913576406400. Its totient is φ = 594549709056.

The previous prime is 745981650671. The next prime is 745981650677. The reversal of 745981650673 is 376056189547.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 745981650673 - 2¹ = 745981650671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (745981650671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37753698 + ... + 37773451.

It is an arithmetic number, because the mean of its divisors is an integer number (57098525400).

Almost surely, 2^745981650673 is an apocalyptic number.

It is an amenable number.

745981650673 is a deficient number, since it is larger than the sum of its proper divisors (167594755727).

745981650673 is a wasteful number, since it uses less digits than its factorization.

745981650673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75527256.

The product of its (nonzero) digits is 38102400, while the sum is 61.

It can be divided in two parts, 74598 and 1650673, that added together give a palindrome (1725271).

The spelling of 745981650673 in words is "seven hundred forty-five billion, nine hundred eighty-one million, six hundred fifty thousand, six hundred seventy-three".