40045445420013 has 24 divisors (see below), whose sum is σ = 63109054407360. Its totient is φ = 24267220608960.

The previous prime is 40045445419997. The next prime is 40045445420021. The reversal of 40045445420013 is 31002454454004.

40045445420013 is a `hidden beast` number, since 4 + 0 + 0 + 4 + 5 + 445 + 4 + 200 + 1 + 3 = 666.

It is not a de Polignac number, because 40045445420013 - 2⁴ = 40045445419997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40045445420013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40045445420083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22006456 + ... + 23756577.

It is an arithmetic number, because the mean of its divisors is an integer number (2629543933640).

Almost surely, 2^{40045445420013} is an apocalyptic number.

It is an amenable number.

40045445420013 is a deficient number, since it is larger than the sum of its proper divisors (23063608987347).

40045445420013 is a wasteful number, since it uses less digits than its factorization.

40045445420013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45771889 (or 45771886 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 40045445420013 its reverse (31002454454004), we get a palindrome (71047899874017).

The spelling of 40045445420013 in words is "forty trillion, forty-five billion, four hundred forty-five million, four hundred twenty thousand, thirteen".