Search a number
-
+
68182231161 = 3112066128217
BaseRepresentation
bin111111011111111110…
…100100100001111001
320111222201220012210210
4333133332210201321
52104114122344121
651153353501333
74632422255022
oct773776444171
9214881805723
1068182231161
1126a09101480
121126a111849
1365779758a5
14342b435c49
151b90c47876
hexfdffa4879

68182231161 has 8 divisors (see below), whose sum is σ = 99174154464. Its totient is φ = 41322564320.

The previous prime is 68182231129. The next prime is 68182231163. The reversal of 68182231161 is 16113228186.

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

It is a cyclic number.

It is not a de Polignac number, because 68182231161 - 25 = 68182231129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68182231163) 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, 1033064076 + ... + 1033064141.

It is an arithmetic number, because the mean of its divisors is an integer number (12396769308).

Almost surely, 268182231161 is an apocalyptic number.

It is an amenable number.

68182231161 is a deficient number, since it is larger than the sum of its proper divisors (30991923303).

68182231161 is a wasteful number, since it uses less digits than its factorization.

68182231161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066128231.

The product of its digits is 27648, while the sum is 39.

The spelling of 68182231161 in words is "sixty-eight billion, one hundred eighty-two million, two hundred thirty-one thousand, one hundred sixty-one".

Divisors: 1 3 11 33 2066128217 6198384651 22727410387 68182231161