7156550161 has 2 divisors, whose sum is σ = 7156550162. Its totient is φ = 7156550160.

The previous prime is 7156550153. The next prime is 7156550173. The reversal of 7156550161 is 1610556517.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6774113025 + 382437136 = 82305^2 + 19556^2 .

It is a cyclic number.

It is not a de Polignac number, because 7156550161 - 2³ = 7156550153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7156550161.

It is not a weakly prime, because it can be changed into another prime (7156553161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3578275080 + 3578275081.

It is an arithmetic number, because the mean of its divisors is an integer number (3578275081).

Almost surely, 2^7156550161 is an apocalyptic number.

It is an amenable number.

7156550161 is a deficient number, since it is larger than the sum of its proper divisors (1).

7156550161 is an equidigital number, since it uses as much as digits as its factorization.

7156550161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31500, while the sum is 37.

The square root of 7156550161 is about 84596.3956738111. The cubic root of 7156550161 is about 1927.0866369599.

The spelling of 7156550161 in words is "seven billion, one hundred fifty-six million, five hundred fifty thousand, one hundred sixty-one".