30783795909 has 4 divisors (see below), whose sum is σ = 41045061216. Its totient is φ = 20522530604.

The previous prime is 30783795901. The next prime is 30783795923. The reversal of 30783795909 is 90959738703.

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 30783795909 - 2³ = 30783795901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30783795901) 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, 5130632649 + ... + 5130632654.

It is an arithmetic number, because the mean of its divisors is an integer number (10261265304).

Almost surely, 2^30783795909 is an apocalyptic number.

It is an amenable number.

30783795909 is a deficient number, since it is larger than the sum of its proper divisors (10261265307).

30783795909 is a wasteful number, since it uses less digits than its factorization.

30783795909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10261265306.

The product of its (nonzero) digits is 12859560, while the sum is 60.

The spelling of 30783795909 in words is "thirty billion, seven hundred eighty-three million, seven hundred ninety-five thousand, nine hundred nine".