61683317029 has 2 divisors, whose sum is σ = 61683317030. Its totient is φ = 61683317028.

The previous prime is 61683316963. The next prime is 61683317039. The reversal of 61683317029 is 92071338616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38975840929 + 22707476100 = 197423^2 + 150690^2 .

It is a cyclic number.

It is not a de Polignac number, because 61683317029 - 2¹⁵ = 61683284261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61683317029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61683317039) 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, 30841658514 + 30841658515.

It is an arithmetic number, because the mean of its divisors is an integer number (30841658515).

Almost surely, 2^61683317029 is an apocalyptic number.

It is an amenable number.

61683317029 is a deficient number, since it is larger than the sum of its proper divisors (1).

61683317029 is an equidigital number, since it uses as much as digits as its factorization.

61683317029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 61683317029 in words is "sixty-one billion, six hundred eighty-three million, three hundred seventeen thousand, twenty-nine".