30440852257 has 2 divisors, whose sum is σ = 30440852258. Its totient is φ = 30440852256.

The previous prime is 30440852237. The next prime is 30440852263. The reversal of 30440852257 is 75225804403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29624950161 + 815902096 = 172119^2 + 28564^2 .

It is an emirp because it is prime and its reverse (75225804403) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30440852257 is a prime.

It is a super-2 number, since 2×30440852257² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30440852237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15220426128 + 15220426129.

It is an arithmetic number, because the mean of its divisors is an integer number (15220426129).

Almost surely, 2^30440852257 is an apocalyptic number.

It is an amenable number.

30440852257 is a deficient number, since it is larger than the sum of its proper divisors (1).

30440852257 is an equidigital number, since it uses as much as digits as its factorization.

30440852257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 40.

The spelling of 30440852257 in words is "thirty billion, four hundred forty million, eight hundred fifty-two thousand, two hundred fifty-seven".