30799918081 has 4 divisors (see below), whose sum is σ = 30807004500. Its totient is φ = 30792831664.

The previous prime is 30799918063. The next prime is 30799918091. The reversal of 30799918081 is 18081999703.

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 259210000 + 30540708081 = 16100^2 + 174759^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30799918081 is a prime.

It is a super-2 number, since 2×30799918081² (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 (30799918091) 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, 3536686 + ... + 3545383.

It is an arithmetic number, because the mean of its divisors is an integer number (7701751125).

Almost surely, 2^30799918081 is an apocalyptic number.

It is an amenable number.

30799918081 is a deficient number, since it is larger than the sum of its proper divisors (7086419).

30799918081 is an equidigital number, since it uses as much as digits as its factorization.

30799918081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7086418.

The product of its (nonzero) digits is 979776, while the sum is 55.

The spelling of 30799918081 in words is "thirty billion, seven hundred ninety-nine million, nine hundred eighteen thousand, eighty-one".