30764728481 has 2 divisors, whose sum is σ = 30764728482. Its totient is φ = 30764728480.

The previous prime is 30764728429. The next prime is 30764728483. The reversal of 30764728481 is 18482746703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28431355456 + 2333373025 = 168616^2 + 48305^2 .

It is a cyclic number.

It is not a de Polignac number, because 30764728481 - 2¹⁰ = 30764727457 is a prime.

It is a super-2 number, since 2×30764728481² (a number of 22 digits) contains 22 as substring.

Together with 30764728483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30764728483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15382364240 + 15382364241.

It is an arithmetic number, because the mean of its divisors is an integer number (15382364241).

Almost surely, 2^30764728481 is an apocalyptic number.

It is an amenable number.

30764728481 is a deficient number, since it is larger than the sum of its proper divisors (1).

30764728481 is an equidigital number, since it uses as much as digits as its factorization.

30764728481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1806336, while the sum is 50.

The spelling of 30764728481 in words is "thirty billion, seven hundred sixty-four million, seven hundred twenty-eight thousand, four hundred eighty-one".