40205540453 has 4 divisors (see below), whose sum is σ = 43298274348. Its totient is φ = 37112806560.

The previous prime is 40205540437. The next prime is 40205540461. The reversal of 40205540453 is 35404550204.

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 5987200129 + 34218340324 = 77377^2 + 184982^2 .

It is a cyclic number.

It is not a de Polignac number, because 40205540453 - 2⁴ = 40205540437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40205540483) 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, 1546366928 + ... + 1546366953.

It is an arithmetic number, because the mean of its divisors is an integer number (10824568587).

Almost surely, 2^40205540453 is an apocalyptic number.

It is an amenable number.

40205540453 is a deficient number, since it is larger than the sum of its proper divisors (3092733895).

40205540453 is a wasteful number, since it uses less digits than its factorization.

40205540453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3092733894.

The product of its (nonzero) digits is 48000, while the sum is 32.

The spelling of 40205540453 in words is "forty billion, two hundred five million, five hundred forty thousand, four hundred fifty-three".