40545344993 has 4 divisors (see below), whose sum is σ = 40548418500. Its totient is φ = 40542271488.

The previous prime is 40545344969. The next prime is 40545345017. The reversal of 40545344993 is 39944354504.

40545344993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (40545344969) and next prime (40545345017).

It can be written as a sum of positive squares in 2 ways, for example, as 17321718544 + 23223626449 = 131612^2 + 152393^2 .

It is a cyclic number.

It is not a de Polignac number, because 40545344993 - 2⁶ = 40545344929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40545344923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1516880 + ... + 1543377.

It is an arithmetic number, because the mean of its divisors is an integer number (10137104625).

Almost surely, 2^40545344993 is an apocalyptic number.

It is an amenable number.

40545344993 is a deficient number, since it is larger than the sum of its proper divisors (3073507).

40545344993 is a wasteful number, since it uses less digits than its factorization.

40545344993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3073506.

The product of its (nonzero) digits is 4665600, while the sum is 50.

The spelling of 40545344993 in words is "forty billion, five hundred forty-five million, three hundred forty-four thousand, nine hundred ninety-three".