6980042161 has 8 divisors (see below), whose sum is σ = 7223193000. Its totient is φ = 6737055360.

The previous prime is 6980042149. The next prime is 6980042191. The reversal of 6980042161 is 1612400896.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 442225 + 6979599936 = 665^2 + 83544^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6980042161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6980042161.

It is not an unprimeable number, because it can be changed into a prime (6980042101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48951 + ... + 127891.

It is an arithmetic number, because the mean of its divisors is an integer number (902899125).

Almost surely, 2^6980042161 is an apocalyptic number.

It is an amenable number.

6980042161 is a deficient number, since it is larger than the sum of its proper divisors (243150839).

6980042161 is a wasteful number, since it uses less digits than its factorization.

6980042161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82019.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 6980042161 is about 83546.6466173239. The cubic root of 6980042161 is about 1911.1114535595. Note that the first 3 decimals are identical.

The spelling of 6980042161 in words is "six billion, nine hundred eighty million, forty-two thousand, one hundred sixty-one".