30686416817 has 4 divisors (see below), whose sum is σ = 35070190656. Its totient is φ = 26302642980.

The previous prime is 30686416777. The next prime is 30686416823. The reversal of 30686416817 is 71861468603.

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 not a de Polignac number, because 30686416817 - 2²⁴ = 30669639601 is a prime.

It is a super-2 number, since 2×30686416817² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30686413817) 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, 2191886909 + ... + 2191886922.

It is an arithmetic number, because the mean of its divisors is an integer number (8767547664).

Almost surely, 2^30686416817 is an apocalyptic number.

It is an amenable number.

30686416817 is a deficient number, since it is larger than the sum of its proper divisors (4383773839).

30686416817 is an equidigital number, since it uses as much as digits as its factorization.

30686416817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4383773838.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 30686416817 in words is "thirty billion, six hundred eighty-six million, four hundred sixteen thousand, eight hundred seventeen".