660408225283 has 2 divisors, whose sum is σ = 660408225284. Its totient is φ = 660408225282.

The previous prime is 660408225181. The next prime is 660408225299. The reversal of 660408225283 is 382522804066.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 660408225283 - 2²⁹ = 659871354371 is a prime.

It is a super-2 number, since 2×660408225283² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (660408222283) 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, 330204112641 + 330204112642.

It is an arithmetic number, because the mean of its divisors is an integer number (330204112642).

Almost surely, 2^660408225283 is an apocalyptic number.

660408225283 is a deficient number, since it is larger than the sum of its proper divisors (1).

660408225283 is an equidigital number, since it uses as much as digits as its factorization.

660408225283 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1105920, while the sum is 46.

The spelling of 660408225283 in words is "six hundred sixty billion, four hundred eight million, two hundred twenty-five thousand, two hundred eighty-three".