61006105493 has 2 divisors, whose sum is σ = 61006105494. Its totient is φ = 61006105492.

The previous prime is 61006105471. The next prime is 61006105541. The reversal of 61006105493 is 39450160016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58793155729 + 2212949764 = 242473^2 + 47042^2 .

It is a cyclic number.

It is not a de Polignac number, because 61006105493 - 2¹⁰ = 61006104469 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61006155493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30503052746 + 30503052747.

It is an arithmetic number, because the mean of its divisors is an integer number (30503052747).

Almost surely, 2^61006105493 is an apocalyptic number.

It is an amenable number.

61006105493 is a deficient number, since it is larger than the sum of its proper divisors (1).

61006105493 is an equidigital number, since it uses as much as digits as its factorization.

61006105493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 61006105493 in words is "sixty-one billion, six million, one hundred five thousand, four hundred ninety-three".