30641811813 has 24 divisors (see below), whose sum is σ = 45968115648. Its totient is φ = 20397412224.

The previous prime is 30641811793. The next prime is 30641811899. The reversal of 30641811813 is 31811814603.

30641811813 is a `hidden beast` number, since 3 + 0 + 641 + 8 + 1 + 1 + 8 + 1 + 3 = 666.

It is not a de Polignac number, because 30641811813 - 2⁶ = 30641811749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30641811113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69856 + ... + 257222.

It is an arithmetic number, because the mean of its divisors is an integer number (1915338152).

Almost surely, 2^30641811813 is an apocalyptic number.

It is an amenable number.

30641811813 is a deficient number, since it is larger than the sum of its proper divisors (15326303835).

30641811813 is an equidigital number, since it uses as much as digits as its factorization.

30641811813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188055 (or 188043 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 30641811813 in words is "thirty billion, six hundred forty-one million, eight hundred eleven thousand, eight hundred thirteen".