60555542809 has 2 divisors, whose sum is σ = 60555542810. Its totient is φ = 60555542808.

The previous prime is 60555542779. The next prime is 60555542813. The reversal of 60555542809 is 90824555506.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53117342784 + 7438200025 = 230472^2 + 86245^2 .

It is a cyclic number.

It is not a de Polignac number, because 60555542809 - 2³³ = 51965608217 is a prime.

It is a super-2 number, since 2×60555542809² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (60555542849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30277771404 + 30277771405.

It is an arithmetic number, because the mean of its divisors is an integer number (30277771405).

Almost surely, 2^60555542809 is an apocalyptic number.

It is an amenable number.

60555542809 is a deficient number, since it is larger than the sum of its proper divisors (1).

60555542809 is an equidigital number, since it uses as much as digits as its factorization.

60555542809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160000, while the sum is 49.

The spelling of 60555542809 in words is "sixty billion, five hundred fifty-five million, five hundred forty-two thousand, eight hundred nine".