61105965096437 has 2 divisors, whose sum is σ = 61105965096438. Its totient is φ = 61105965096436.

The previous prime is 61105965096391. The next prime is 61105965096523. The reversal of 61105965096437 is 73469056950116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50070540210916 + 11035424885521 = 7076054^2 + 3321961^2 .

It is a cyclic number.

It is not a de Polignac number, because 61105965096437 - 2⁶ = 61105965096373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61105965096437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61105965095437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30552982548218 + 30552982548219.

It is an arithmetic number, because the mean of its divisors is an integer number (30552982548219).

Almost surely, 2^{61105965096437} is an apocalyptic number.

It is an amenable number.

61105965096437 is a deficient number, since it is larger than the sum of its proper divisors (1).

61105965096437 is an equidigital number, since it uses as much as digits as its factorization.

61105965096437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36741600, while the sum is 62.

The spelling of 61105965096437 in words is "sixty-one trillion, one hundred five billion, nine hundred sixty-five million, ninety-six thousand, four hundred thirty-seven".