40400422165 has 8 divisors (see below), whose sum is σ = 48481707168. Its totient is φ = 32319537360.

The previous prime is 40400422163. The next prime is 40400422189. The reversal of 40400422165 is 56122400404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40400422165 - 2¹ = 40400422163 is a prime.

It is a super-2 number, since 2×40400422165² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400422163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208630 + ... + 352600.

It is an arithmetic number, because the mean of its divisors is an integer number (6060213396).

Almost surely, 2^40400422165 is an apocalyptic number.

It is an amenable number.

40400422165 is a deficient number, since it is larger than the sum of its proper divisors (8081285003).

40400422165 is a wasteful number, since it uses less digits than its factorization.

40400422165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200099.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 40400422165 its reverse (56122400404), we get a palindrome (96522822569).

The spelling of 40400422165 in words is "forty billion, four hundred million, four hundred twenty-two thousand, one hundred sixty-five".