30661105111 has 32 divisors (see below), whose sum is σ = 38940048000. Its totient is φ = 23986448640.

The previous prime is 30661105109. The next prime is 30661105141. The reversal of 30661105111 is 11150116603.

It is not a de Polignac number, because 30661105111 - 2¹ = 30661105109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30661105141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 358221 + ... + 435481.

It is an arithmetic number, because the mean of its divisors is an integer number (1216876500).

Almost surely, 2^30661105111 is an apocalyptic number.

30661105111 is a deficient number, since it is larger than the sum of its proper divisors (8278942889).

30661105111 is an equidigital number, since it uses as much as digits as its factorization.

30661105111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77384 (or 77370 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 25.

The spelling of 30661105111 in words is "thirty billion, six hundred sixty-one million, one hundred five thousand, one hundred eleven".