40818248309453 has 4 divisors (see below), whose sum is σ = 41276880313020. Its totient is φ = 40359616305888.

The previous prime is 40818248309411. The next prime is 40818248309483. The reversal of 40818248309453 is 35490384281804.

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 22305425471044 + 18512822838409 = 4722862^2 + 4302653^2 .

It is a cyclic number.

It is not a de Polignac number, because 40818248309453 - 2⁶ = 40818248309389 is a prime.

It is a super-2 number, since 2×40818248309453² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40818248309392 and 40818248309401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40818248309483) 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, 229316001650 + ... + 229316001827.

It is an arithmetic number, because the mean of its divisors is an integer number (10319220078255).

Almost surely, 2^{40818248309453} is an apocalyptic number.

It is an amenable number.

40818248309453 is a deficient number, since it is larger than the sum of its proper divisors (458632003567).

40818248309453 is an equidigital number, since it uses as much as digits as its factorization.

40818248309453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458632003566.

The product of its (nonzero) digits is 26542080, while the sum is 59.

The spelling of 40818248309453 in words is "forty trillion, eight hundred eighteen billion, two hundred forty-eight million, three hundred nine thousand, four hundred fifty-three".