440821817616 has 160 divisors (see below), whose sum is σ = 1166982665472. Its totient is φ = 143361146880.

The previous prime is 440821817603. The next prime is 440821817741. The reversal of 440821817616 is 616718128044.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96647976 + ... + 96652536.

Almost surely, 2^440821817616 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 440821817616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (583491332736).

440821817616 is an abundant number, since it is smaller than the sum of its proper divisors (726160847856).

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

440821817616 is a wasteful number, since it uses less digits than its factorization.

440821817616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4961 (or 4955 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 440821817616 in words is "four hundred forty billion, eight hundred twenty-one million, eight hundred seventeen thousand, six hundred sixteen".