60111731509 has 2 divisors, whose sum is σ = 60111731510. Its totient is φ = 60111731508.

The previous prime is 60111731453. The next prime is 60111731569. The reversal of 60111731509 is 90513711106.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54334211409 + 5777520100 = 233097^2 + 76010^2 .

It is a cyclic number.

It is not a de Polignac number, because 60111731509 - 2⁹ = 60111730997 is a prime.

It is a super-2 number, since 2×60111731509² (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 (60111731569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30055865754 + 30055865755.

It is an arithmetic number, because the mean of its divisors is an integer number (30055865755).

Almost surely, 2^60111731509 is an apocalyptic number.

It is an amenable number.

60111731509 is a deficient number, since it is larger than the sum of its proper divisors (1).

60111731509 is an equidigital number, since it uses as much as digits as its factorization.

60111731509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 34.

The spelling of 60111731509 in words is "sixty billion, one hundred eleven million, seven hundred thirty-one thousand, five hundred nine".