40440440264 has 64 divisors (see below), whose sum is σ = 89065992960. Its totient is φ = 16850730240.

The previous prime is 40440440251. The next prime is 40440440267. The reversal of 40440440264 is 46204404404.

It is a self number, because there is not a number n which added to its sum of digits gives 40440440264.

It is not an unprimeable number, because it can be changed into a prime (40440440267) 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, 3124334 + ... + 3137250.

It is an arithmetic number, because the mean of its divisors is an integer number (1391656140).

Almost surely, 2^40440440264 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 40440440264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44532996480).

40440440264 is an abundant number, since it is smaller than the sum of its proper divisors (48625552696).

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

40440440264 is a wasteful number, since it uses less digits than its factorization.

40440440264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14478 (or 14474 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 40440440264 its reverse (46204404404), we get a palindrome (86644844668).

The spelling of 40440440264 in words is "forty billion, four hundred forty million, four hundred forty thousand, two hundred sixty-four".