30155617243 has 2 divisors, whose sum is σ = 30155617244. Its totient is φ = 30155617242.

The previous prime is 30155617223. The next prime is 30155617253. The reversal of 30155617243 is 34271655103.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30155617243 is a prime.

It is a super-2 number, since 2×30155617243² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30155617223) 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 as a sum of consecutive naturals, namely, 15077808621 + 15077808622.

It is an arithmetic number, because the mean of its divisors is an integer number (15077808622).

Almost surely, 2^30155617243 is an apocalyptic number.

30155617243 is a deficient number, since it is larger than the sum of its proper divisors (1).

30155617243 is an equidigital number, since it uses as much as digits as its factorization.

30155617243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 30155617243 in words is "thirty billion, one hundred fifty-five million, six hundred seventeen thousand, two hundred forty-three".