68611669160 has 32 divisors (see below), whose sum is σ = 154557312840. Its totient is φ = 27412479744.

The previous prime is 68611669151. The next prime is 68611669193. The reversal of 68611669160 is 6196611686.

It can be written as a sum of positive squares in 4 ways, for example, as 60479597476 + 8132071684 = 245926^2 + 90178^2 .

It is a super-2 number, since 2×68611669160² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 68611669099 and 68611669108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971327 + ... + 1039566.

Almost surely, 2^68611669160 is an apocalyptic number.

It is an amenable number.

68611669160 is an abundant number, since it is smaller than the sum of its proper divisors (85945643680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68611669160 is a wasteful number, since it uses less digits than its factorization.

68611669160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011757 (or 2011753 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 68611669160 in words is "sixty-eight billion, six hundred eleven million, six hundred sixty-nine thousand, one hundred sixty".