6971972947 has 16 divisors (see below), whose sum is σ = 7179621120. Its totient is φ = 6767867808.

The previous prime is 6971972941. The next prime is 6971972963. The reversal of 6971972947 is 7492791796.

It is a cyclic number.

It is not a de Polignac number, because 6971972947 - 2²³ = 6963584339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6971972941) 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, 1544668 + ... + 1549174.

It is an arithmetic number, because the mean of its divisors is an integer number (448726320).

Almost surely, 2^6971972947 is an apocalyptic number.

6971972947 is a deficient number, since it is larger than the sum of its proper divisors (207648173).

6971972947 is a wasteful number, since it uses less digits than its factorization.

6971972947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4890.

The product of its digits is 12002256, while the sum is 61.

The square root of 6971972947 is about 83498.3409835189. The cubic root of 6971972947 is about 1910.3747286105.

The spelling of 6971972947 in words is "six billion, nine hundred seventy-one million, nine hundred seventy-two thousand, nine hundred forty-seven".