29058242821 has 2 divisors, whose sum is σ = 29058242822. Its totient is φ = 29058242820.

The previous prime is 29058242809. The next prime is 29058242831. The reversal of 29058242821 is 12824285092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15201657025 + 13856585796 = 123295^2 + 117714^2 .

It is a cyclic number.

It is not a de Polignac number, because 29058242821 - 2⁹ = 29058242309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29058242831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14529121410 + 14529121411.

It is an arithmetic number, because the mean of its divisors is an integer number (14529121411).

Almost surely, 2^29058242821 is an apocalyptic number.

It is an amenable number.

29058242821 is a deficient number, since it is larger than the sum of its proper divisors (1).

29058242821 is an equidigital number, since it uses as much as digits as its factorization.

29058242821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 29058242821 in words is "twenty-nine billion, fifty-eight million, two hundred forty-two thousand, eight hundred twenty-one".