40255456402171 has 8 divisors (see below), whose sum is σ = 42007662458784. Its totient is φ = 38503414414080.

The previous prime is 40255456402127. The next prime is 40255456402199. The reversal of 40255456402171 is 17120465455204.

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

It is a cyclic number.

It is not a de Polignac number, because 40255456402171 - 2²⁹ = 40254919531259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40255456409171) 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, 40515606 + ... + 41497291.

It is an arithmetic number, because the mean of its divisors is an integer number (5250957807348).

Almost surely, 2^{40255456402171} is an apocalyptic number.

40255456402171 is a deficient number, since it is larger than the sum of its proper divisors (1752206056613).

40255456402171 is a wasteful number, since it uses less digits than its factorization.

40255456402171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82034261.

The product of its (nonzero) digits is 1344000, while the sum is 46.

The spelling of 40255456402171 in words is "forty trillion, two hundred fifty-five billion, four hundred fifty-six million, four hundred two thousand, one hundred seventy-one".