61712227393 has 2 divisors, whose sum is σ = 61712227394. Its totient is φ = 61712227392.

The previous prime is 61712227387. The next prime is 61712227433. The reversal of 61712227393 is 39372221716.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51750790144 + 9961437249 = 227488^2 + 99807^2 .

It is a cyclic number.

It is not a de Polignac number, because 61712227393 - 2¹³ = 61712219201 is a prime.

It is not a weakly prime, because it can be changed into another prime (61712227303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30856113696 + 30856113697.

It is an arithmetic number, because the mean of its divisors is an integer number (30856113697).

Almost surely, 2^61712227393 is an apocalyptic number.

It is an amenable number.

61712227393 is a deficient number, since it is larger than the sum of its proper divisors (1).

61712227393 is an equidigital number, since it uses as much as digits as its factorization.

61712227393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 43.

The spelling of 61712227393 in words is "sixty-one billion, seven hundred twelve million, two hundred twenty-seven thousand, three hundred ninety-three".