357043608721 has 2 divisors, whose sum is σ = 357043608722. Its totient is φ = 357043608720.

The previous prime is 357043608679. The next prime is 357043608871. The reversal of 357043608721 is 127806340753.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 356933358721 + 110250000 = 597439^2 + 10500^2 .

It is a cyclic number.

It is not a de Polignac number, because 357043608721 - 2²⁷ = 356909390993 is a prime.

It is not a weakly prime, because it can be changed into another prime (357043608121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178521804360 + 178521804361.

It is an arithmetic number, because the mean of its divisors is an integer number (178521804361).

Almost surely, 2^357043608721 is an apocalyptic number.

It is an amenable number.

357043608721 is a deficient number, since it is larger than the sum of its proper divisors (1).

357043608721 is an equidigital number, since it uses as much as digits as its factorization.

357043608721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 357043608721 in words is "three hundred fifty-seven billion, forty-three million, six hundred eight thousand, seven hundred twenty-one".