40447007745 has 48 divisors (see below), whose sum is σ = 67223083200. Its totient is φ = 20765945088.

The previous prime is 40447007683. The next prime is 40447007747. The reversal of 40447007745 is 54770074404.

It is a happy number.

It is not a de Polignac number, because 40447007745 - 2⁹ = 40447007233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40447007697 and 40447007706.

It is not an unprimeable number, because it can be changed into a prime (40447007747) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4398042 + ... + 4407228.

It is an arithmetic number, because the mean of its divisors is an integer number (1400480900).

Almost surely, 2^40447007745 is an apocalyptic number.

It is an amenable number.

40447007745 is a deficient number, since it is larger than the sum of its proper divisors (26776075455).

40447007745 is a wasteful number, since it uses less digits than its factorization.

40447007745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9602 (or 9573 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 42.

The spelling of 40447007745 in words is "forty billion, four hundred forty-seven million, seven thousand, seven hundred forty-five".