7140219950161 has 9 divisors (see below), whose sum is σ = 7152594542299. Its totient is φ = 7127866744024.

The previous prime is 7140219950117. The next prime is 7140219950173. The reversal of 7140219950161 is 1610599120417.

The square root of 7140219950161 is 2672119.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7098094850625 + 42125099536 = 2664225^2 + 205244^2 .

It is a de Polignac number, because none of the positive numbers 2^k-7140219950161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7140219950861) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1809022590 + ... + 1809026536.

Almost surely, 2^{7140219950161} is an apocalyptic number.

7140219950161 is the 2672119-th square number.

7140219950161 is the 1336060-th centered octagonal number.

It is an amenable number.

7140219950161 is a deficient number, since it is larger than the sum of its proper divisors (12374592138).

7140219950161 is an frugal number, since it uses more digits than its factorization.

7140219950161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9248 (or 4624 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 46.

The spelling of 7140219950161 in words is "seven trillion, one hundred forty billion, two hundred nineteen million, nine hundred fifty thousand, one hundred sixty-one".