217413045663 has 64 divisors (see below), whose sum is σ = 341537433600. Its totient is φ = 121599999360.

The previous prime is 217413045649. The next prime is 217413045671. The reversal of 217413045663 is 366540314712.

It is not a de Polignac number, because 217413045663 - 2¹² = 217413041567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217413045163) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10207581 + ... + 10228857.

It is an arithmetic number, because the mean of its divisors is an integer number (5336522400).

Almost surely, 2^217413045663 is an apocalyptic number.

217413045663 is a deficient number, since it is larger than the sum of its proper divisors (124124387937).

217413045663 is a wasteful number, since it uses less digits than its factorization.

217413045663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21732.

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 217413045663 in words is "two hundred seventeen billion, four hundred thirteen million, forty-five thousand, six hundred sixty-three".