210865285416 has 64 divisors (see below), whose sum is σ = 541495713600. Its totient is φ = 68378024448.

The previous prime is 210865285391. The next prime is 210865285417. The reversal of 210865285416 is 614582568012.

It is a super-2 number, since 2×210865285416² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210865285417) 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, 7248436 + ... + 7277468.

It is an arithmetic number, because the mean of its divisors is an integer number (8460870525).

Almost surely, 2^210865285416 is an apocalyptic number.

It is an amenable number.

210865285416 is an abundant number, since it is smaller than the sum of its proper divisors (330630428184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210865285416 is a wasteful number, since it uses less digits than its factorization.

210865285416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37258 (or 37254 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 48.

The spelling of 210865285416 in words is "two hundred ten billion, eight hundred sixty-five million, two hundred eighty-five thousand, four hundred sixteen".