40121055868205 has 48 divisors (see below), whose sum is σ = 52356744728064. Its totient is φ = 29501311357440.

The previous prime is 40121055868199. The next prime is 40121055868237. The reversal of 40121055868205 is 50286855012104.

40121055868205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40121055868205 - 2¹⁸ = 40121055606061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40121055868205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 200544425 + ... + 200744385.

It is an arithmetic number, because the mean of its divisors is an integer number (1090765515168).

Almost surely, 2^{40121055868205} is an apocalyptic number.

It is an amenable number.

40121055868205 is a deficient number, since it is larger than the sum of its proper divisors (12235688859859).

40121055868205 is a wasteful number, since it uses less digits than its factorization.

40121055868205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201006 (or 200993 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 47.

The spelling of 40121055868205 in words is "forty trillion, one hundred twenty-one billion, fifty-five million, eight hundred sixty-eight thousand, two hundred five".