30505505519 has 2 divisors, whose sum is σ = 30505505520. Its totient is φ = 30505505518.

The previous prime is 30505505489. The next prime is 30505505533. The reversal of 30505505519 is 91550550503.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30505505519 is a prime.

It is a super-2 number, since 2×30505505519² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30505505419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15252752759 + 15252752760.

It is an arithmetic number, because the mean of its divisors is an integer number (15252752760).

Almost surely, 2^30505505519 is an apocalyptic number.

30505505519 is a deficient number, since it is larger than the sum of its proper divisors (1).

30505505519 is an equidigital number, since it uses as much as digits as its factorization.

30505505519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84375, while the sum is 38.

The spelling of 30505505519 in words is "thirty billion, five hundred five million, five hundred five thousand, five hundred nineteen".