29490998261 has 2 divisors, whose sum is σ = 29490998262. Its totient is φ = 29490998260.

The previous prime is 29490998231. The next prime is 29490998263. The reversal of 29490998261 is 16289909492.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20252136100 + 9238862161 = 142310^2 + 96119^2 .

It is a cyclic number.

It is not a de Polignac number, because 29490998261 - 2¹⁸ = 29490736117 is a prime.

Together with 29490998263, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29490998261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29490998263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14745499130 + 14745499131.

It is an arithmetic number, because the mean of its divisors is an integer number (14745499131).

Almost surely, 2^29490998261 is an apocalyptic number.

It is an amenable number.

29490998261 is a deficient number, since it is larger than the sum of its proper divisors (1).

29490998261 is an equidigital number, since it uses as much as digits as its factorization.

29490998261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5038848, while the sum is 59.

The spelling of 29490998261 in words is "twenty-nine billion, four hundred ninety million, nine hundred ninety-eight thousand, two hundred sixty-one".