30542866681 has 8 divisors (see below), whose sum is σ = 32231377280. Its totient is φ = 28862455248.

The previous prime is 30542866649. The next prime is 30542866693. The reversal of 30542866681 is 18666824503.

It is a happy number.

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

It is not a de Polignac number, because 30542866681 - 2⁵ = 30542866649 is a prime.

It is a super-2 number, since 2×30542866681² (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 (30542866631) 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, 2017041 + ... + 2032126.

It is an arithmetic number, because the mean of its divisors is an integer number (4028922160).

Almost surely, 2^30542866681 is an apocalyptic number.

It is an amenable number.

30542866681 is a deficient number, since it is larger than the sum of its proper divisors (1688510599).

30542866681 is a wasteful number, since it uses less digits than its factorization.

30542866681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4049583.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 30542866681 in words is "thirty billion, five hundred forty-two million, eight hundred sixty-six thousand, six hundred eighty-one".