6355406644417 has 2 divisors, whose sum is σ = 6355406644418. Its totient is φ = 6355406644416.

The previous prime is 6355406644387. The next prime is 6355406644421. The reversal of 6355406644417 is 7144466045536.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6001172173441 + 354234470976 = 2449729^2 + 595176^2 .

It is a cyclic number.

It is not a de Polignac number, because 6355406644417 - 2¹⁵ = 6355406611649 is a prime.

It is not a weakly prime, because it can be changed into another prime (6355416644417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3177703322208 + 3177703322209.

It is an arithmetic number, because the mean of its divisors is an integer number (3177703322209).

Almost surely, 2^{6355406644417} is an apocalyptic number.

It is an amenable number.

6355406644417 is a deficient number, since it is larger than the sum of its proper divisors (1).

6355406644417 is an equidigital number, since it uses as much as digits as its factorization.

6355406644417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29030400, while the sum is 55.

The spelling of 6355406644417 in words is "six trillion, three hundred fifty-five billion, four hundred six million, six hundred forty-four thousand, four hundred seventeen".