217061051051 has 8 divisors (see below), whose sum is σ = 233834764800. Its totient is φ = 200298295872.

The previous prime is 217061051033. The next prime is 217061051083. The reversal of 217061051051 is 150150160712.

217061051051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-217061051051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (217061051021) 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 in 7 ways as a sum of consecutive naturals, for example, 2698475 + ... + 2777748.

It is an arithmetic number, because the mean of its divisors is an integer number (29229345600).

Almost surely, 2^217061051051 is an apocalyptic number.

217061051051 is a deficient number, since it is larger than the sum of its proper divisors (16773713749).

217061051051 is a wasteful number, since it uses less digits than its factorization.

217061051051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5479285.

The product of its (nonzero) digits is 2100, while the sum is 29.

The spelling of 217061051051 in words is "two hundred seventeen billion, sixty-one million, fifty-one thousand, fifty-one".