7947731701871 has 8 divisors (see below), whose sum is σ = 8662217314800. Its totient is φ = 7247977751232.

The previous prime is 7947731701867. The next prime is 7947731701901. The reversal of 7947731701871 is 1781071377497.

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 7947731701871 - 2² = 7947731701867 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7947731701571) 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, 3682914446 + ... + 3682916603.

It is an arithmetic number, because the mean of its divisors is an integer number (1082777164350).

Almost surely, 2^{7947731701871} is an apocalyptic number.

7947731701871 is a deficient number, since it is larger than the sum of its proper divisors (714485612929).

7947731701871 is a wasteful number, since it uses less digits than its factorization.

7947731701871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7365831145.

The product of its (nonzero) digits is 14521248, while the sum is 62.

The spelling of 7947731701871 in words is "seven trillion, nine hundred forty-seven billion, seven hundred thirty-one million, seven hundred one thousand, eight hundred seventy-one".