61105965095437 has 2 divisors, whose sum is σ = 61105965095438. Its totient is φ = 61105965095436.

The previous prime is 61105965095407. The next prime is 61105965095509. The reversal of 61105965095437 is 73459056950116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37640912177961 + 23465052917476 = 6135219^2 + 4844074^2 .

It is a cyclic number.

It is not a de Polignac number, because 61105965095437 - 2³¹ = 61103817611789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61105965095407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30552982547718 + 30552982547719.

It is an arithmetic number, because the mean of its divisors is an integer number (30552982547719).

Almost surely, 2^{61105965095437} is an apocalyptic number.

It is an amenable number.

61105965095437 is a deficient number, since it is larger than the sum of its proper divisors (1).

61105965095437 is an equidigital number, since it uses as much as digits as its factorization.

61105965095437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618000, while the sum is 61.

The spelling of 61105965095437 in words is "sixty-one trillion, one hundred five billion, nine hundred sixty-five million, ninety-five thousand, four hundred thirty-seven".