40108171516165 has 16 divisors (see below), whose sum is σ = 48502377285120. Its totient is φ = 31838208442560.

The previous prime is 40108171516139. The next prime is 40108171516177. The reversal of 40108171516165 is 56161517180104.

It is not a de Polignac number, because 40108171516165 - 2¹³ = 40108171507973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2896876 + ... + 9413194.

It is an arithmetic number, because the mean of its divisors is an integer number (3031398580320).

Almost surely, 2^{40108171516165} is an apocalyptic number.

It is an amenable number.

40108171516165 is a deficient number, since it is larger than the sum of its proper divisors (8394205768955).

40108171516165 is a wasteful number, since it uses less digits than its factorization.

40108171516165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6525852.

The product of its (nonzero) digits is 201600, while the sum is 46.

Adding to 40108171516165 its reverse (56161517180104), we get a palindrome (96269688696269).

The spelling of 40108171516165 in words is "forty trillion, one hundred eight billion, one hundred seventy-one million, five hundred sixteen thousand, one hundred sixty-five".