731644645045 has 8 divisors (see below), whose sum is σ = 878151223296. Its totient is φ = 585197283216.

The previous prime is 731644645019. The next prime is 731644645073. The reversal of 731644645045 is 540546446137.

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 731644645045 - 2¹¹ = 731644642997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 731644645045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14776917 + ... + 14826346.

It is an arithmetic number, because the mean of its divisors is an integer number (109768902912).

Almost surely, 2^731644645045 is an apocalyptic number.

It is an amenable number.

731644645045 is a deficient number, since it is larger than the sum of its proper divisors (146506578251).

731644645045 is a wasteful number, since it uses less digits than its factorization.

731644645045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29608211.

The product of its (nonzero) digits is 4838400, while the sum is 49.

The spelling of 731644645045 in words is "seven hundred thirty-one billion, six hundred forty-four million, six hundred forty-five thousand, forty-five".