40166413555 has 4 divisors (see below), whose sum is σ = 48199696272. Its totient is φ = 32133130840.

The previous prime is 40166413523. The next prime is 40166413577. The reversal of 40166413555 is 55531466104.

It is a happy number.

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

It is not a de Polignac number, because 40166413555 - 2⁵ = 40166413523 is a prime.

It is a super-2 number, since 2×40166413555² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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, 4016641351 + ... + 4016641360.

It is an arithmetic number, because the mean of its divisors is an integer number (12049924068).

Almost surely, 2^40166413555 is an apocalyptic number.

40166413555 is a deficient number, since it is larger than the sum of its proper divisors (8033282717).

40166413555 is an equidigital number, since it uses as much as digits as its factorization.

40166413555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8033282716.

The product of its (nonzero) digits is 216000, while the sum is 40.

Adding to 40166413555 its reverse (55531466104), we get a palindrome (95697879659).

The spelling of 40166413555 in words is "forty billion, one hundred sixty-six million, four hundred thirteen thousand, five hundred fifty-five".