61330579573 has 2 divisors, whose sum is σ = 61330579574. Its totient is φ = 61330579572.

The previous prime is 61330579537. The next prime is 61330579577. The reversal of 61330579573 is 37597503316.

It is a happy number.

61330579573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (61330579537) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56709707044 + 4620872529 = 238138^2 + 67977^2 .

It is a cyclic number.

It is not a de Polignac number, because 61330579573 - 2³³ = 52740644981 is a prime.

It is a super-2 number, since 2×61330579573² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61330579577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30665289786 + 30665289787.

It is an arithmetic number, because the mean of its divisors is an integer number (30665289787).

Almost surely, 2^61330579573 is an apocalyptic number.

It is an amenable number.

61330579573 is a deficient number, since it is larger than the sum of its proper divisors (1).

61330579573 is an equidigital number, since it uses as much as digits as its factorization.

61330579573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1786050, while the sum is 49.

The spelling of 61330579573 in words is "sixty-one billion, three hundred thirty million, five hundred seventy-nine thousand, five hundred seventy-three".