61798464029 has 2 divisors, whose sum is σ = 61798464030. Its totient is φ = 61798464028.

The previous prime is 61798463989. The next prime is 61798464037. The reversal of 61798464029 is 92046489716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59596039129 + 2202424900 = 244123^2 + 46930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61798464029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61798464229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30899232014 + 30899232015.

It is an arithmetic number, because the mean of its divisors is an integer number (30899232015).

Almost surely, 2^61798464029 is an apocalyptic number.

It is an amenable number.

61798464029 is a deficient number, since it is larger than the sum of its proper divisors (1).

61798464029 is an equidigital number, since it uses as much as digits as its factorization.

61798464029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 61798464029 in words is "sixty-one billion, seven hundred ninety-eight million, four hundred sixty-four thousand, twenty-nine".