40045055575405 has 4 divisors (see below), whose sum is σ = 48054066690492. Its totient is φ = 32036044460320.

The previous prime is 40045055575391. The next prime is 40045055575523. The reversal of 40045055575405 is 50457555054004.

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 13026714436516 + 27018341138889 = 3609254^2 + 5197917^2 .

It is not a de Polignac number, because 40045055575405 - 2¹¹ = 40045055573357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4004505557536 + ... + 4004505557545.

It is an arithmetic number, because the mean of its divisors is an integer number (12013516672623).

Almost surely, 2^{40045055575405} is an apocalyptic number.

It is an amenable number.

40045055575405 is a deficient number, since it is larger than the sum of its proper divisors (8009011115087).

40045055575405 is an equidigital number, since it uses as much as digits as its factorization.

40045055575405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8009011115086.

The product of its (nonzero) digits is 7000000, while the sum is 49.

The spelling of 40045055575405 in words is "forty trillion, forty-five billion, fifty-five million, five hundred seventy-five thousand, four hundred five".