61729080419 has 2 divisors, whose sum is σ = 61729080420. Its totient is φ = 61729080418.

The previous prime is 61729080299. The next prime is 61729080421. The reversal of 61729080419 is 91408092716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61729080419 - 2⁸ = 61729080163 is a prime.

It is a super-2 number, since 2×61729080419² (a number of 22 digits) contains 22 as substring.

Together with 61729080421, 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 (61729083419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30864540209 + 30864540210.

It is an arithmetic number, because the mean of its divisors is an integer number (30864540210).

Almost surely, 2^61729080419 is an apocalyptic number.

61729080419 is a deficient number, since it is larger than the sum of its proper divisors (1).

61729080419 is an equidigital number, since it uses as much as digits as its factorization.

61729080419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 61729080419 in words is "sixty-one billion, seven hundred twenty-nine million, eighty thousand, four hundred nineteen".