61074727393 has 2 divisors, whose sum is σ = 61074727394. Its totient is φ = 61074727392.

The previous prime is 61074727361. The next prime is 61074727411. The reversal of 61074727393 is 39372747016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57224773089 + 3849954304 = 239217^2 + 62048^2 .

It is a cyclic number.

It is not a de Polignac number, because 61074727393 - 2⁵ = 61074727361 is a prime.

It is a super-2 number, since 2×61074727393² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61074724393) 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, 30537363696 + 30537363697.

It is an arithmetic number, because the mean of its divisors is an integer number (30537363697).

Almost surely, 2^61074727393 is an apocalyptic number.

It is an amenable number.

61074727393 is a deficient number, since it is larger than the sum of its proper divisors (1).

61074727393 is an equidigital number, since it uses as much as digits as its factorization.

61074727393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1333584, while the sum is 49.

The spelling of 61074727393 in words is "sixty-one billion, seventy-four million, seven hundred twenty-seven thousand, three hundred ninety-three".