345656399353 has 2 divisors, whose sum is σ = 345656399354. Its totient is φ = 345656399352.

The previous prime is 345656399329. The next prime is 345656399359. The reversal of 345656399353 is 353993656543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278021034729 + 67635364624 = 527277^2 + 260068^2 .

It is a cyclic number.

It is not a de Polignac number, because 345656399353 - 2⁵ = 345656399321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 345656399291 and 345656399300.

It is not a weakly prime, because it can be changed into another prime (345656399359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172828199676 + 172828199677.

It is an arithmetic number, because the mean of its divisors is an integer number (172828199677).

Almost surely, 2^345656399353 is an apocalyptic number.

It is an amenable number.

345656399353 is a deficient number, since it is larger than the sum of its proper divisors (1).

345656399353 is an equidigital number, since it uses as much as digits as its factorization.

345656399353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 118098000, while the sum is 61.

The spelling of 345656399353 in words is "three hundred forty-five billion, six hundred fifty-six million, three hundred ninety-nine thousand, three hundred fifty-three".