61066267057 has 2 divisors, whose sum is σ = 61066267058. Its totient is φ = 61066267056.

The previous prime is 61066267033. The next prime is 61066267079. The reversal of 61066267057 is 75076266016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42634403361 + 18431863696 = 206481^2 + 135764^2 .

It is a cyclic number.

It is not a de Polignac number, because 61066267057 - 2¹⁹ = 61065742769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61066266998 and 61066267016.

It is not a weakly prime, because it can be changed into another prime (61066261057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30533133528 + 30533133529.

It is an arithmetic number, because the mean of its divisors is an integer number (30533133529).

Almost surely, 2^61066267057 is an apocalyptic number.

It is an amenable number.

61066267057 is a deficient number, since it is larger than the sum of its proper divisors (1).

61066267057 is an equidigital number, since it uses as much as digits as its factorization.

61066267057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 61066267057 in words is "sixty-one billion, sixty-six million, two hundred sixty-seven thousand, fifty-seven".