40448168427828 has 96 divisors (see below), whose sum is σ = 109537009440768. Its totient is φ = 11377595376000.

The previous prime is 40448168427817. The next prime is 40448168427829. The reversal of 40448168427828 is 82872486184404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40448168427829) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 656650 + ... + 9018177.

It is an arithmetic number, because the mean of its divisors is an integer number (1141010515008).

Almost surely, 2^{40448168427828} 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 40448168427828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54768504720384).

40448168427828 is an abundant number, since it is smaller than the sum of its proper divisors (69088841012940).

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

40448168427828 is a wasteful number, since it uses less digits than its factorization.

40448168427828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9675613 (or 9675611 counting only the distinct ones).

The product of its (nonzero) digits is 176160768, while the sum is 66.

The spelling of 40448168427828 in words is "forty trillion, four hundred forty-eight billion, one hundred sixty-eight million, four hundred twenty-seven thousand, eight hundred twenty-eight".