217206162741 has 48 divisors (see below), whose sum is σ = 303005767680. Its totient is φ = 138386008800.

The previous prime is 217206162739. The next prime is 217206162781. The reversal of 217206162741 is 147261602712.

217206162741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 217206162741 - 2¹ = 217206162739 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 217206162741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217206162731) 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 47 ways as a sum of consecutive naturals, for example, 84219790 + ... + 84222368.

It is an arithmetic number, because the mean of its divisors is an integer number (6312620160).

Almost surely, 2^217206162741 is an apocalyptic number.

It is an amenable number.

217206162741 is a deficient number, since it is larger than the sum of its proper divisors (85799604939).

217206162741 is a wasteful number, since it uses less digits than its factorization.

217206162741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2998 (or 2967 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The spelling of 217206162741 in words is "two hundred seventeen billion, two hundred six million, one hundred sixty-two thousand, seven hundred forty-one".