30685164091 has 4 divisors (see below), whose sum is σ = 30701513952. Its totient is φ = 30668814232.

The previous prime is 30685164089. The next prime is 30685164109. The reversal of 30685164091 is 19046158603.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30685164091 - 2¹ = 30685164089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30685164001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8172115 + ... + 8175868.

It is an arithmetic number, because the mean of its divisors is an integer number (7675378488).

Almost surely, 2^30685164091 is an apocalyptic number.

30685164091 is a deficient number, since it is larger than the sum of its proper divisors (16349861).

30685164091 is a wasteful number, since it uses less digits than its factorization.

30685164091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16349860.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 30685164091 in words is "thirty billion, six hundred eighty-five million, one hundred sixty-four thousand, ninety-one".