30665042519 has 2 divisors, whose sum is σ = 30665042520. Its totient is φ = 30665042518.

The previous prime is 30665042501. The next prime is 30665042531. The reversal of 30665042519 is 91524056603.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30665042519 - 2³² = 26370075223 is a prime.

It is a super-2 number, since 2×30665042519² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30665042719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15332521259 + 15332521260.

It is an arithmetic number, because the mean of its divisors is an integer number (15332521260).

Almost surely, 2^30665042519 is an apocalyptic number.

30665042519 is a deficient number, since it is larger than the sum of its proper divisors (1).

30665042519 is an equidigital number, since it uses as much as digits as its factorization.

30665042519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 30665042519 in words is "thirty billion, six hundred sixty-five million, forty-two thousand, five hundred nineteen".