30381329665 has 4 divisors (see below), whose sum is σ = 36457595604. Its totient is φ = 24305063728.

The previous prime is 30381329659. The next prime is 30381329723. The reversal of 30381329665 is 56692318303.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4896080784 + 25485248881 = 69972^2 + 159641^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30381329665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3038132962 + ... + 3038132971.

It is an arithmetic number, because the mean of its divisors is an integer number (9114398901).

Almost surely, 2^30381329665 is an apocalyptic number.

It is an amenable number.

30381329665 is a deficient number, since it is larger than the sum of its proper divisors (6076265939).

30381329665 is an equidigital number, since it uses as much as digits as its factorization.

30381329665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6076265938.

The product of its (nonzero) digits is 699840, while the sum is 46.

The spelling of 30381329665 in words is "thirty billion, three hundred eighty-one million, three hundred twenty-nine thousand, six hundred sixty-five".