30029947957 has 2 divisors, whose sum is σ = 30029947958. Its totient is φ = 30029947956.

The previous prime is 30029947921. The next prime is 30029947967. The reversal of 30029947957 is 75974992003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25164745956 + 4865202001 = 158634^2 + 69751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30029947957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30029947898 and 30029947907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30029947967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15014973978 + 15014973979.

It is an arithmetic number, because the mean of its divisors is an integer number (15014973979).

Almost surely, 2^30029947957 is an apocalyptic number.

It is an amenable number.

30029947957 is a deficient number, since it is larger than the sum of its proper divisors (1).

30029947957 is an equidigital number, since it uses as much as digits as its factorization.

30029947957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4286520, while the sum is 55.

The spelling of 30029947957 in words is "thirty billion, twenty-nine million, nine hundred forty-seven thousand, nine hundred fifty-seven".