29930528261 has 2 divisors, whose sum is σ = 29930528262. Its totient is φ = 29930528260.

The previous prime is 29930528227. The next prime is 29930528273. The reversal of 29930528261 is 16282503992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19346028100 + 10584500161 = 139090^2 + 102881^2 .

It is a cyclic number.

It is not a de Polignac number, because 29930528261 - 2⁶ = 29930528197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29930528281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14965264130 + 14965264131.

It is an arithmetic number, because the mean of its divisors is an integer number (14965264131).

Almost surely, 2^29930528261 is an apocalyptic number.

It is an amenable number.

29930528261 is a deficient number, since it is larger than the sum of its proper divisors (1).

29930528261 is an equidigital number, since it uses as much as digits as its factorization.

29930528261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 29930528261 in words is "twenty-nine billion, nine hundred thirty million, five hundred twenty-eight thousand, two hundred sixty-one".