217109060953 has 4 divisors (see below), whose sum is σ = 217137180688. Its totient is φ = 217080941220.

The previous prime is 217109060941. The next prime is 217109060999. The reversal of 217109060953 is 359060901712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-217109060953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (217109069953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14048283 + ... + 14063728.

It is an arithmetic number, because the mean of its divisors is an integer number (54284295172).

Almost surely, 2^217109060953 is an apocalyptic number.

It is an amenable number.

217109060953 is a deficient number, since it is larger than the sum of its proper divisors (28119735).

217109060953 is an equidigital number, since it uses as much as digits as its factorization.

217109060953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28119734.

The product of its (nonzero) digits is 102060, while the sum is 43.

The spelling of 217109060953 in words is "two hundred seventeen billion, one hundred nine million, sixty thousand, nine hundred fifty-three".