40121673604205 has 4 divisors (see below), whose sum is σ = 48146008325052. Its totient is φ = 32097338883360.

The previous prime is 40121673604193. The next prime is 40121673604217. The reversal of 40121673604205 is 50240637612104.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (40121673604193) and next prime (40121673604217).

It can be written as a sum of positive squares in 2 ways, for example, as 15667006836649 + 24454666767556 = 3958157^2 + 4945166^2 .

It is not a de Polignac number, because 40121673604205 - 2¹² = 40121673600109 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, 4012167360416 + ... + 4012167360425.

It is an arithmetic number, because the mean of its divisors is an integer number (12036502081263).

Almost surely, 2^{40121673604205} is an apocalyptic number.

It is an amenable number.

40121673604205 is a deficient number, since it is larger than the sum of its proper divisors (8024334720847).

40121673604205 is an equidigital number, since it uses as much as digits as its factorization.

40121673604205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8024334720846.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 40121673604205 in words is "forty trillion, one hundred twenty-one billion, six hundred seventy-three million, six hundred four thousand, two hundred five".