7985447133471 has 24 divisors (see below), whose sum is σ = 11548588135344. Its totient is φ = 5317146201600.

The previous prime is 7985447133413. The next prime is 7985447133493. The reversal of 7985447133471 is 1743317445897.

7985447133471 is a `hidden beast` number, since 7 + 9 + 8 + 544 + 7 + 13 + 3 + 4 + 71 = 666.

It is not a de Polignac number, because 7985447133471 - 2¹⁰ = 7985447132447 is a prime.

It is a super-3 number, since 3×7985447133471³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7985447133399 and 7985447133408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7985447133071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127022196 + ... + 127085046.

It is an arithmetic number, because the mean of its divisors is an integer number (481191172306).

Almost surely, 2^{7985447133471} is an apocalyptic number.

7985447133471 is a deficient number, since it is larger than the sum of its proper divisors (3563141001873).

7985447133471 is a wasteful number, since it uses less digits than its factorization.

7985447133471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79831 (or 79828 counting only the distinct ones).

The product of its digits is 71124480, while the sum is 63.

The spelling of 7985447133471 in words is "seven trillion, nine hundred eighty-five billion, four hundred forty-seven million, one hundred thirty-three thousand, four hundred seventy-one".