30148489477 has 2 divisors, whose sum is σ = 30148489478. Its totient is φ = 30148489476.

The previous prime is 30148489463. The next prime is 30148489507. The reversal of 30148489477 is 77498484103.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16949696481 + 13198792996 = 130191^2 + 114886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30148489477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30148489417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15074244738 + 15074244739.

It is an arithmetic number, because the mean of its divisors is an integer number (15074244739).

Almost surely, 2^30148489477 is an apocalyptic number.

It is an amenable number.

30148489477 is a deficient number, since it is larger than the sum of its proper divisors (1).

30148489477 is an equidigital number, since it uses as much as digits as its factorization.

30148489477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5419008, while the sum is 55.

The spelling of 30148489477 in words is "thirty billion, one hundred forty-eight million, four hundred eighty-nine thousand, four hundred seventy-seven".