61614946837 has 2 divisors, whose sum is σ = 61614946838. Its totient is φ = 61614946836.

The previous prime is 61614946793. The next prime is 61614946909. The reversal of 61614946837 is 73864941616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45861935716 + 15753011121 = 214154^2 + 125511^2 .

It is a cyclic number.

It is not a de Polignac number, because 61614946837 - 2³¹ = 59467463189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61614946037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30807473418 + 30807473419.

It is an arithmetic number, because the mean of its divisors is an integer number (30807473419).

Almost surely, 2^61614946837 is an apocalyptic number.

It is an amenable number.

61614946837 is a deficient number, since it is larger than the sum of its proper divisors (1).

61614946837 is an equidigital number, since it uses as much as digits as its factorization.

61614946837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 55.

The spelling of 61614946837 in words is "sixty-one billion, six hundred fourteen million, nine hundred forty-six thousand, eight hundred thirty-seven".