30805532661 has 8 divisors (see below), whose sum is σ = 41082280000. Its totient is φ = 20532903552.

The previous prime is 30805532657. The next prime is 30805532671. The reversal of 30805532661 is 16623550803.

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

It is not a de Polignac number, because 30805532661 - 2² = 30805532657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30805532621) 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, 1012060 + ... + 1042053.

It is an arithmetic number, because the mean of its divisors is an integer number (5135285000).

Almost surely, 2^30805532661 is an apocalyptic number.

It is an amenable number.

30805532661 is a deficient number, since it is larger than the sum of its proper divisors (10276747339).

30805532661 is a wasteful number, since it uses less digits than its factorization.

30805532661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059115.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 30805532661 in words is "thirty billion, eight hundred five million, five hundred thirty-two thousand, six hundred sixty-one".