354505221547 has 2 divisors, whose sum is σ = 354505221548. Its totient is φ = 354505221546.

The previous prime is 354505221533. The next prime is 354505221571. The reversal of 354505221547 is 745122505453.

It is a weak prime.

It is an emirp because it is prime and its reverse (745122505453) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354505221547 is a prime.

It is not a weakly prime, because it can be changed into another prime (354505221347) 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, 177252610773 + 177252610774.

It is an arithmetic number, because the mean of its divisors is an integer number (177252610774).

Almost surely, 2^354505221547 is an apocalyptic number.

354505221547 is a deficient number, since it is larger than the sum of its proper divisors (1).

354505221547 is an equidigital number, since it uses as much as digits as its factorization.

354505221547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840000, while the sum is 43.

The spelling of 354505221547 in words is "three hundred fifty-four billion, five hundred five million, two hundred twenty-one thousand, five hundred forty-seven".