40543240545 has 12 divisors (see below), whose sum is σ = 70274950356. Its totient is φ = 21623061600.

The previous prime is 40543240541. The next prime is 40543240553. The reversal of 40543240545 is 54504234504.

40543240545 is a `hidden beast` number, since 40 + 5 + 4 + 32 + 40 + 545 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22373278929 + 18169961616 = 149577^2 + 134796^2 .

It is not a de Polignac number, because 40543240545 - 2² = 40543240541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40543240541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 450480406 + ... + 450480495.

It is an arithmetic number, because the mean of its divisors is an integer number (5856245863).

Almost surely, 2^40543240545 is an apocalyptic number.

40543240545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40543240545 is a deficient number, since it is larger than the sum of its proper divisors (29731709811).

40543240545 is a wasteful number, since it uses less digits than its factorization.

40543240545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900960912 (or 900960909 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 36.

The spelling of 40543240545 in words is "forty billion, five hundred forty-three million, two hundred forty thousand, five hundred forty-five".