971538604271 has 4 divisors (see below), whose sum is σ = 1028687933952. Its totient is φ = 914389274592.

The previous prime is 971538604259. The next prime is 971538604331. The reversal of 971538604271 is 172406835179.

971538604271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172406835179 = 74449 ⋅2315771.

It is a cyclic number.

It is not a de Polignac number, because 971538604271 - 2⁶ = 971538604207 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 (971538634271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28574664815 + ... + 28574664848.

It is an arithmetic number, because the mean of its divisors is an integer number (257171983488).

It is a 1-persistent number, because it is pandigital, but 2⋅971538604271 = 1943077208542 is not.

Almost surely, 2^971538604271 is an apocalyptic number.

971538604271 is a deficient number, since it is larger than the sum of its proper divisors (57149329681).

971538604271 is a wasteful number, since it uses less digits than its factorization.

971538604271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57149329680.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 971538604271 in words is "nine hundred seventy-one billion, five hundred thirty-eight million, six hundred four thousand, two hundred seventy-one".