6984956161 has 2 divisors, whose sum is σ = 6984956162. Its totient is φ = 6984956160.

The previous prime is 6984956131. The next prime is 6984956179. The reversal of 6984956161 is 1616594896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6710722561 + 274233600 = 81919^2 + 16560^2 .

It is a cyclic number.

It is not a de Polignac number, because 6984956161 - 2¹¹ = 6984954113 is a prime.

It is a super-2 number, since 2×6984956161² = 97579225142183715842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6984956131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3492478080 + 3492478081.

It is an arithmetic number, because the mean of its divisors is an integer number (3492478081).

Almost surely, 2^6984956161 is an apocalyptic number.

It is an amenable number.

6984956161 is a deficient number, since it is larger than the sum of its proper divisors (1).

6984956161 is an equidigital number, since it uses as much as digits as its factorization.

6984956161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 55.

The square root of 6984956161 is about 83576.0501639076. The cubic root of 6984956161 is about 1911.5598271034.

The spelling of 6984956161 in words is "six billion, nine hundred eighty-four million, nine hundred fifty-six thousand, one hundred sixty-one".