61983010615709 has 2 divisors, whose sum is σ = 61983010615710. Its totient is φ = 61983010615708.

The previous prime is 61983010615663. The next prime is 61983010615741. The reversal of 61983010615709 is 90751601038916.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60840826802809 + 1142183812900 = 7800053^2 + 1068730^2 .

It is a cyclic number.

It is not a de Polignac number, because 61983010615709 - 2⁸ = 61983010615453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61983010615909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30991505307854 + 30991505307855.

It is an arithmetic number, because the mean of its divisors is an integer number (30991505307855).

Almost surely, 2^{61983010615709} is an apocalyptic number.

It is an amenable number.

61983010615709 is a deficient number, since it is larger than the sum of its proper divisors (1).

61983010615709 is an equidigital number, since it uses as much as digits as its factorization.

61983010615709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2449440, while the sum is 56.

The spelling of 61983010615709 in words is "sixty-one trillion, nine hundred eighty-three billion, ten million, six hundred fifteen thousand, seven hundred nine".