660106425731 has 2 divisors, whose sum is σ = 660106425732. Its totient is φ = 660106425730.

The previous prime is 660106425709. The next prime is 660106425779. The reversal of 660106425731 is 137524601066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660106425731 - 2¹⁰ = 660106424707 is a prime.

It is a super-2 number, since 2×660106425731² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (660106425791) 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, 330053212865 + 330053212866.

It is an arithmetic number, because the mean of its divisors is an integer number (330053212866).

Almost surely, 2^660106425731 is an apocalyptic number.

660106425731 is a deficient number, since it is larger than the sum of its proper divisors (1).

660106425731 is an equidigital number, since it uses as much as digits as its factorization.

660106425731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 660106425731 in words is "six hundred sixty billion, one hundred six million, four hundred twenty-five thousand, seven hundred thirty-one".