421668531508017 has 8 divisors (see below), whose sum is σ = 580360989602560. Its totient is φ = 272044213876080.

The previous prime is 421668531507943. The next prime is 421668531508031. The reversal of 421668531508017 is 710805135866124.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 421668531508017 - 2¹⁴ = 421668531491633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421668531508067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2267035115542 + ... + 2267035115727.

It is an arithmetic number, because the mean of its divisors is an integer number (72545123700320).

Almost surely, 2^{421668531508017} is an apocalyptic number.

It is an amenable number.

421668531508017 is a deficient number, since it is larger than the sum of its proper divisors (158692458094543).

421668531508017 is a wasteful number, since it uses less digits than its factorization.

421668531508017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4534070231303.

The product of its (nonzero) digits is 9676800, while the sum is 57.

The spelling of 421668531508017 in words is "four hundred twenty-one trillion, six hundred sixty-eight billion, five hundred thirty-one million, five hundred eight thousand, seventeen".