400441380672 has 112 divisors (see below), whose sum is σ = 1082393275392. Its totient is φ = 130598254080.

The previous prime is 400441380613. The next prime is 400441380701. The reversal of 400441380672 is 276083144004.

It is a self number, because there is not a number n which added to its sum of digits gives 400441380672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40810647 + ... + 40820457.

Almost surely, 2^400441380672 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 400441380672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541196637696).

400441380672 is an abundant number, since it is smaller than the sum of its proper divisors (681951894720).

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

400441380672 is a wasteful number, since it uses less digits than its factorization.

400441380672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14396 (or 14386 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 400441380672 in words is "four hundred billion, four hundred forty-one million, three hundred eighty thousand, six hundred seventy-two".