68670181602 has 144 divisors (see below), whose sum is σ = 166810807800. Its totient is φ = 20395584000.

The previous prime is 68670181589. The next prime is 68670181607. The reversal of 68670181602 is 20618107686.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 46194475041 + 22475706561 = 214929^2 + 149919^2 .

It is not an unprimeable number, because it can be changed into a prime (68670181607) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 46366702 + ... + 46368182.

Almost surely, 2^68670181602 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68670181602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83405403900).

68670181602 is an abundant number, since it is smaller than the sum of its proper divisors (98140626198).

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

68670181602 is a wasteful number, since it uses less digits than its factorization.

68670181602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921 (or 1907 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 68670181602 in words is "sixty-eight billion, six hundred seventy million, one hundred eighty-one thousand, six hundred two".