210971068989 has 16 divisors (see below), whose sum is σ = 288786220800. Its totient is φ = 136916663040.

The previous prime is 210971068969. The next prime is 210971068991. The reversal of 210971068989 is 989860179012.

It is not a de Polignac number, because 210971068989 - 2¹² = 210971064893 is a prime.

It is a super-2 number, since 2×210971068989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210971068969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1820389 + ... + 1932810.

It is an arithmetic number, because the mean of its divisors is an integer number (18049138800).

Almost surely, 2^210971068989 is an apocalyptic number.

It is an amenable number.

210971068989 is a deficient number, since it is larger than the sum of its proper divisors (77815151811).

210971068989 is a wasteful number, since it uses less digits than its factorization.

210971068989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3753700.

The product of its (nonzero) digits is 3919104, while the sum is 60.

The spelling of 210971068989 in words is "two hundred ten billion, nine hundred seventy-one million, sixty-eight thousand, nine hundred eighty-nine".