357405021689 has 2 divisors, whose sum is σ = 357405021690. Its totient is φ = 357405021688.

The previous prime is 357405021679. The next prime is 357405021707. The reversal of 357405021689 is 986120504753.

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., 357263221225 + 141800464 = 597715^2 + 11908^2 .

It is a cyclic number.

It is not a de Polignac number, because 357405021689 - 2³² = 353110054393 is a prime.

It is not a weakly prime, because it can be changed into another prime (357405021679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178702510844 + 178702510845.

It is an arithmetic number, because the mean of its divisors is an integer number (178702510845).

It is a 1-persistent number, because it is pandigital, but 2⋅357405021689 = 714810043378 is not.

Almost surely, 2^357405021689 is an apocalyptic number.

It is an amenable number.

357405021689 is a deficient number, since it is larger than the sum of its proper divisors (1).

357405021689 is an equidigital number, since it uses as much as digits as its factorization.

357405021689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 357405021689 in words is "three hundred fifty-seven billion, four hundred five million, twenty-one thousand, six hundred eighty-nine".