40310044040 has 96 divisors (see below), whose sum is σ = 105558655680. Its totient is φ = 13813607808.

The previous prime is 40310043937. The next prime is 40310044067. The reversal of 40310044040 is 4044001304.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5215619 + ... + 5223341.

It is an arithmetic number, because the mean of its divisors is an integer number (1099569330).

Almost surely, 2^40310044040 is an apocalyptic number.

40310044040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40310044040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52779327840).

40310044040 is an abundant number, since it is smaller than the sum of its proper divisors (65248611640).

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

40310044040 is a wasteful number, since it uses less digits than its factorization.

40310044040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10411 (or 10400 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 40310044040 its reverse (4044001304), we get a palindrome (44354045344).

The spelling of 40310044040 in words is "forty billion, three hundred ten million, forty-four thousand, forty".