40404065215 has 4 divisors (see below), whose sum is σ = 48484878264. Its totient is φ = 32323252168.

The previous prime is 40404065197. The next prime is 40404065239. The reversal of 40404065215 is 51256040404.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40404065215 - 2²⁹ = 39867194303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4040406517 + ... + 4040406526.

It is an arithmetic number, because the mean of its divisors is an integer number (12121219566).

Almost surely, 2^40404065215 is an apocalyptic number.

40404065215 is a deficient number, since it is larger than the sum of its proper divisors (8080813049).

40404065215 is an equidigital number, since it uses as much as digits as its factorization.

40404065215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8080813048.

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 40404065215 in words is "forty billion, four hundred four million, sixty-five thousand, two hundred fifteen".