30685592091 has 64 divisors (see below), whose sum is σ = 51502252032. Its totient is φ = 15787200000.

The previous prime is 30685592089. The next prime is 30685592101. The reversal of 30685592091 is 19029558603.

It is a happy number.

It is not a de Polignac number, because 30685592091 - 2¹ = 30685592089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30685592091.

It is not an unprimeable number, because it can be changed into a prime (30685592011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26659366 + ... + 26660516.

It is an arithmetic number, because the mean of its divisors is an integer number (804722688).

Almost surely, 2^30685592091 is an apocalyptic number.

30685592091 is a deficient number, since it is larger than the sum of its proper divisors (20816659941).

30685592091 is a wasteful number, since it uses less digits than its factorization.

30685592091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184.

The product of its (nonzero) digits is 583200, while the sum is 48.

The spelling of 30685592091 in words is "thirty billion, six hundred eighty-five million, five hundred ninety-two thousand, ninety-one".