217668671001 has 6 divisors (see below), whose sum is σ = 314410302570. Its totient is φ = 145112447328.

The previous prime is 217668670991. The next prime is 217668671027. The reversal of 217668671001 is 100176866712.

It can be written as a sum of positive squares in only one way, i.e., 217118721600 + 549949401 = 465960^2 + 23451^2 .

It is not a de Polignac number, because 217668671001 - 2⁶ = 217668670937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (217668670001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12092703936 + ... + 12092703953.

It is an arithmetic number, because the mean of its divisors is an integer number (52401717095).

Almost surely, 2^217668671001 is an apocalyptic number.

It is an amenable number.

217668671001 is a deficient number, since it is larger than the sum of its proper divisors (96741631569).

217668671001 is a wasteful number, since it uses less digits than its factorization.

217668671001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24185407895 (or 24185407892 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 217668671001 in words is "two hundred seventeen billion, six hundred sixty-eight million, six hundred seventy-one thousand, one".