40244345064 has 96 divisors (see below), whose sum is σ = 135890015040. Its totient is φ = 10453075200.

The previous prime is 40244345051. The next prime is 40244345069. The reversal of 40244345064 is 46054344204.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (40244345069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3623997 + ... + 3635084.

It is an arithmetic number, because the mean of its divisors is an integer number (1415520990).

Almost surely, 2^40244345064 is an apocalyptic number.

40244345064 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40244345064 is an abundant number, since it is smaller than the sum of its proper divisors (95645669976).

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

40244345064 is a wasteful number, since it uses less digits than its factorization.

40244345064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7259111 (or 7259104 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 36.

Adding to 40244345064 its reverse (46054344204), we get a palindrome (86298689268).

The spelling of 40244345064 in words is "forty billion, two hundred forty-four million, three hundred forty-five thousand, sixty-four".