731629631616 has 512 divisors, whose sum is σ = 2186587872000. Its totient is φ = 215332356096.

The previous prime is 731629631611. The next prime is 731629631653. The reversal of 731629631616 is 616136926137.

It is not an unprimeable number, because it can be changed into a prime (731629631611) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2641262070 + ... + 2641262346.

Almost surely, 2^731629631616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731629631616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1093293936000).

731629631616 is an abundant number, since it is smaller than the sum of its proper divisors (1454958240384).

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

731629631616 is a wasteful number, since it uses less digits than its factorization.

731629631616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576 (or 564 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 51.

The spelling of 731629631616 in words is "seven hundred thirty-one billion, six hundred twenty-nine million, six hundred thirty-one thousand, six hundred sixteen".