9969971567 has 16 divisors (see below), whose sum is σ = 10600632000. Its totient is φ = 9358836480.

The previous prime is 9969971527. The next prime is 9969971611. The reversal of 9969971567 is 7651799699.

It is a cyclic number.

It is not a de Polignac number, because 9969971567 - 2¹⁶ = 9969906031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9969971497 and 9969971506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9969971507) 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, 1843934 + ... + 1849332.

It is an arithmetic number, because the mean of its divisors is an integer number (662539500).

Almost surely, 2^9969971567 is an apocalyptic number.

9969971567 is a deficient number, since it is larger than the sum of its proper divisors (630660433).

9969971567 is a wasteful number, since it uses less digits than its factorization.

9969971567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7186.

The product of its digits is 57868020, while the sum is 68.

The square root of 9969971567 is about 99849.7449521029. The cubic root of 9969971567 is about 2152.2760513119.

The spelling of 9969971567 in words is "nine billion, nine hundred sixty-nine million, nine hundred seventy-one thousand, five hundred sixty-seven".