30565479157 has 2 divisors, whose sum is σ = 30565479158. Its totient is φ = 30565479156.

The previous prime is 30565479097. The next prime is 30565479163. The reversal of 30565479157 is 75197456503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17182228561 + 13383250596 = 131081^2 + 115686^2 .

It is a cyclic number.

It is not a de Polignac number, because 30565479157 - 2⁷ = 30565479029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30565479187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15282739578 + 15282739579.

It is an arithmetic number, because the mean of its divisors is an integer number (15282739579).

Almost surely, 2^30565479157 is an apocalyptic number.

It is an amenable number.

30565479157 is a deficient number, since it is larger than the sum of its proper divisors (1).

30565479157 is an equidigital number, since it uses as much as digits as its factorization.

30565479157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3969000, while the sum is 52.

The spelling of 30565479157 in words is "thirty billion, five hundred sixty-five million, four hundred seventy-nine thousand, one hundred fifty-seven".