1647145412271 has 6 divisors (see below), whose sum is σ = 2379210039960. Its totient is φ = 1098096941508.

The previous prime is 1647145412261. The next prime is 1647145412273. The reversal of 1647145412271 is 1722145417461.

It is a happy number.

1647145412271 is a `hidden beast` number, since 1 + 6 + 4 + 7 + 1 + 454 + 122 + 71 = 666.

It is not a de Polignac number, because 1647145412271 - 2⁶ = 1647145412207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1647145412273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91508078451 + ... + 91508078468.

It is an arithmetic number, because the mean of its divisors is an integer number (396535006660).

Almost surely, 2^{1647145412271} is an apocalyptic number.

1647145412271 is a deficient number, since it is larger than the sum of its proper divisors (732064627689).

1647145412271 is a wasteful number, since it uses less digits than its factorization.

1647145412271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183016156925 (or 183016156922 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The spelling of 1647145412271 in words is "one trillion, six hundred forty-seven billion, one hundred forty-five million, four hundred twelve thousand, two hundred seventy-one".