30068571681 has 16 divisors (see below), whose sum is σ = 44551540800. Its totient is φ = 20043235584.

The previous prime is 30068571667. The next prime is 30068571691. The reversal of 30068571681 is 18617586003.

It is a de Polignac number, because none of the positive numbers 2^k-30068571681 is a prime.

It is a super-2 number, since 2×30068571681² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30068571641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168385 + ... + 297473.

It is an arithmetic number, because the mean of its divisors is an integer number (2784471300).

Almost surely, 2^30068571681 is an apocalyptic number.

It is an amenable number.

30068571681 is a deficient number, since it is larger than the sum of its proper divisors (14482969119).

30068571681 is a wasteful number, since it uses less digits than its factorization.

30068571681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137725 (or 137719 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 30068571681 in words is "thirty billion, sixty-eight million, five hundred seventy-one thousand, six hundred eighty-one".