30656034457 has 2 divisors, whose sum is σ = 30656034458. Its totient is φ = 30656034456.

The previous prime is 30656034439. The next prime is 30656034463. The reversal of 30656034457 is 75443065603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26134278921 + 4521755536 = 161661^2 + 67244^2 .

It is an emirp because it is prime and its reverse (75443065603) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30656034457 - 2¹¹ = 30656032409 is a prime.

It is not a weakly prime, because it can be changed into another prime (30656034407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15328017228 + 15328017229.

It is an arithmetic number, because the mean of its divisors is an integer number (15328017229).

Almost surely, 2^30656034457 is an apocalyptic number.

It is an amenable number.

30656034457 is a deficient number, since it is larger than the sum of its proper divisors (1).

30656034457 is an equidigital number, since it uses as much as digits as its factorization.

30656034457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 43.

The spelling of 30656034457 in words is "thirty billion, six hundred fifty-six million, thirty-four thousand, four hundred fifty-seven".