354212917657 has 2 divisors, whose sum is σ = 354212917658. Its totient is φ = 354212917656.

The previous prime is 354212917621. The next prime is 354212917687. The reversal of 354212917657 is 756719212453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 353387447296 + 825470361 = 594464^2 + 28731^2 .

It is a cyclic number.

It is not a de Polignac number, because 354212917657 - 2⁷ = 354212917529 is a prime.

It is a super-3 number, since 3×354212917657³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (354212917687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177106458828 + 177106458829.

It is an arithmetic number, because the mean of its divisors is an integer number (177106458829).

Almost surely, 2^354212917657 is an apocalyptic number.

It is an amenable number.

354212917657 is a deficient number, since it is larger than the sum of its proper divisors (1).

354212917657 is an equidigital number, since it uses as much as digits as its factorization.

354212917657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3175200, while the sum is 52.

The spelling of 354212917657 in words is "three hundred fifty-four billion, two hundred twelve million, nine hundred seventeen thousand, six hundred fifty-seven".