131671585872447 has 16 divisors (see below), whose sum is σ = 181635858591840. Its totient is φ = 84744847803392.

The previous prime is 131671585872419. The next prime is 131671585872493. The reversal of 131671585872447 is 744278585176131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131671585872447 - 2¹¹ = 131671585870399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131671585872647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82025838 + ... + 83615675.

It is an arithmetic number, because the mean of its divisors is an integer number (11352241161990).

Almost surely, 2^{131671585872447} is an apocalyptic number.

131671585872447 is a deficient number, since it is larger than the sum of its proper divisors (49964272719393).

131671585872447 is a wasteful number, since it uses less digits than its factorization.

131671585872447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165650682.

The product of its digits is 316108800, while the sum is 69.

The spelling of 131671585872447 in words is "one hundred thirty-one trillion, six hundred seventy-one billion, five hundred eighty-five million, eight hundred seventy-two thousand, four hundred forty-seven".