68650812169 has 9 divisors (see below), whose sum is σ = 68920429197. Its totient is φ = 68382248844.

The previous prime is 68650812161. The next prime is 68650812257. The reversal of 68650812169 is 96121805686.

The square root of 68650812169 is 262013.

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

It is not a de Polignac number, because 68650812169 - 2³ = 68650812161 is a prime.

It is a super-2 number, since 2×68650812169² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68650812161) 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, 125503954 + ... + 125504500.

Almost surely, 2^68650812169 is an apocalyptic number.

68650812169 is the 262013-rd square number.

68650812169 is the 131007-th centered octagonal number.

It is an amenable number.

68650812169 is a deficient number, since it is larger than the sum of its proper divisors (269617028).

68650812169 is an frugal number, since it uses more digits than its factorization.

68650812169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052 (or 1026 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 68650812169 in words is "sixty-eight billion, six hundred fifty million, eight hundred twelve thousand, one hundred sixty-nine".