30682645561 has 4 divisors (see below), whose sum is σ = 30683610000. Its totient is φ = 30681681124.

The previous prime is 30682645547. The next prime is 30682645583. The reversal of 30682645561 is 16554628603.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30682645561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30682645061) 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, 432811 + ... + 498688.

It is an arithmetic number, because the mean of its divisors is an integer number (7670902500).

Almost surely, 2^30682645561 is an apocalyptic number.

It is an amenable number.

30682645561 is a deficient number, since it is larger than the sum of its proper divisors (964439).

30682645561 is an equidigital number, since it uses as much as digits as its factorization.

30682645561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964438.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 30682645561 in words is "thirty billion, six hundred eighty-two million, six hundred forty-five thousand, five hundred sixty-one".