40542045545 has 4 divisors (see below), whose sum is σ = 48650454660. Its totient is φ = 32433636432.

The previous prime is 40542045529. The next prime is 40542045547. The reversal of 40542045545 is 54554024504.

40542045545 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 can be written as a sum of positive squares in 2 ways, for example, as 23719696144 + 16822349401 = 154012^2 + 129701^2 .

It is a cyclic number.

It is not a de Polignac number, because 40542045545 - 2⁴ = 40542045529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40542045499 and 40542045508.

It is not an unprimeable number, because it can be changed into a prime (40542045547) 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, 4054204550 + ... + 4054204559.

It is an arithmetic number, because the mean of its divisors is an integer number (12162613665).

Almost surely, 2^40542045545 is an apocalyptic number.

It is an amenable number.

40542045545 is a deficient number, since it is larger than the sum of its proper divisors (8108409115).

40542045545 is an equidigital number, since it uses as much as digits as its factorization.

40542045545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8108409114.

The product of its (nonzero) digits is 320000, while the sum is 38.

The spelling of 40542045545 in words is "forty billion, five hundred forty-two million, forty-five thousand, five hundred forty-five".