720444124641 has 16 divisors (see below), whose sum is σ = 972744409088. Its totient is φ = 474255810000.

The previous prime is 720444124633. The next prime is 720444124657. The reversal of 720444124641 is 146421444027.

It is not a de Polignac number, because 720444124641 - 2³ = 720444124633 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 720444124641.

It is not an unprimeable number, because it can be changed into a prime (720444114641) 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, 4400485 + ... + 4561266.

It is an arithmetic number, because the mean of its divisors is an integer number (60796525568).

Almost surely, 2^720444124641 is an apocalyptic number.

It is an amenable number.

720444124641 is a deficient number, since it is larger than the sum of its proper divisors (252300284447).

720444124641 is a wasteful number, since it uses less digits than its factorization.

720444124641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8962092.

The product of its (nonzero) digits is 172032, while the sum is 39.

Adding to 720444124641 its reverse (146421444027), we get a palindrome (866865568668).

The spelling of 720444124641 in words is "seven hundred twenty billion, four hundred forty-four million, one hundred twenty-four thousand, six hundred forty-one".