30420977329 has 2 divisors, whose sum is σ = 30420977330. Its totient is φ = 30420977328.

The previous prime is 30420977309. The next prime is 30420977407. The reversal of 30420977329 is 92377902403.

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., 19306546704 + 11114430625 = 138948^2 + 105425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30420977329 is a prime.

It is not a weakly prime, because it can be changed into another prime (30420977309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15210488664 + 15210488665.

It is an arithmetic number, because the mean of its divisors is an integer number (15210488665).

Almost surely, 2^30420977329 is an apocalyptic number.

It is an amenable number.

30420977329 is a deficient number, since it is larger than the sum of its proper divisors (1).

30420977329 is an equidigital number, since it uses as much as digits as its factorization.

30420977329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 46.

The spelling of 30420977329 in words is "thirty billion, four hundred twenty million, nine hundred seventy-seven thousand, three hundred twenty-nine".