30855043507 has 2 divisors, whose sum is σ = 30855043508. Its totient is φ = 30855043506.

The previous prime is 30855043481. The next prime is 30855043523. The reversal of 30855043507 is 70534055803.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30855043507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30855043507.

It is not a weakly prime, because it can be changed into another prime (30855043547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15427521753 + 15427521754.

It is an arithmetic number, because the mean of its divisors is an integer number (15427521754).

Almost surely, 2^30855043507 is an apocalyptic number.

30855043507 is a deficient number, since it is larger than the sum of its proper divisors (1).

30855043507 is an equidigital number, since it uses as much as digits as its factorization.

30855043507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 30855043507 in words is "thirty billion, eight hundred fifty-five million, forty-three thousand, five hundred seven".