210740216807 has 4 divisors (see below), whose sum is σ = 210754846680. Its totient is φ = 210725586936.

The previous prime is 210740216803. The next prime is 210740216809. The reversal of 210740216807 is 708612047012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210740216807 - 2² = 210740216803 is a prime.

It is a super-2 number, since 2×210740216807² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210740216803) 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, 7293308 + ... + 7322145.

It is an arithmetic number, because the mean of its divisors is an integer number (52688711670).

Almost surely, 2^210740216807 is an apocalyptic number.

210740216807 is a deficient number, since it is larger than the sum of its proper divisors (14629873).

210740216807 is a wasteful number, since it uses less digits than its factorization.

210740216807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14629872.

The product of its (nonzero) digits is 37632, while the sum is 38.

The spelling of 210740216807 in words is "two hundred ten billion, seven hundred forty million, two hundred sixteen thousand, eight hundred seven".