971547745163 has 4 divisors (see below), whose sum is σ = 971554716288. Its totient is φ = 971540774040.

The previous prime is 971547745151. The next prime is 971547745177. The reversal of 971547745163 is 361547745179.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 971547745163 - 2¹⁸ = 971547483019 is a prime.

It is a super-2 number, since 2×971547745163² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (971547745123) 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, 3272156 + ... + 3556697.

It is an arithmetic number, because the mean of its divisors is an integer number (242888679072).

Almost surely, 2^971547745163 is an apocalyptic number.

971547745163 is a deficient number, since it is larger than the sum of its proper divisors (6971125).

971547745163 is a wasteful number, since it uses less digits than its factorization.

971547745163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6971124.

The product of its digits is 22226400, while the sum is 59.

The spelling of 971547745163 in words is "nine hundred seventy-one billion, five hundred forty-seven million, seven hundred forty-five thousand, one hundred sixty-three".