30779748907 has 4 divisors (see below), whose sum is σ = 30791206656. Its totient is φ = 30768291160.

The previous prime is 30779748863. The next prime is 30779748911. The reversal of 30779748907 is 70984797703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70984797703 = 6131 ⋅11578013.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30779748907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30779748407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5724844 + ... + 5730217.

It is an arithmetic number, because the mean of its divisors is an integer number (7697801664).

Almost surely, 2^30779748907 is an apocalyptic number.

30779748907 is a deficient number, since it is larger than the sum of its proper divisors (11457749).

30779748907 is a wasteful number, since it uses less digits than its factorization.

30779748907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11457748.

The product of its (nonzero) digits is 18670176, while the sum is 61.

The spelling of 30779748907 in words is "thirty billion, seven hundred seventy-nine million, seven hundred forty-eight thousand, nine hundred seven".