210216334464 has 48 divisors (see below), whose sum is σ = 604919403270. Its totient is φ = 70072111104.

The previous prime is 210216334411. The next prime is 210216334481. The reversal of 210216334464 is 464433612012.

210216334464 is a `hidden beast` number, since 2 + 1 + 0 + 2 + 163 + 34 + 464 = 666.

It can be written as a sum of positive squares in only one way, i.e., 210020558400 + 195776064 = 458280^2 + 13992^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91238577 + ... + 91240880.

Almost surely, 2^210216334464 is an apocalyptic number.

210216334464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

210216334464 is an abundant number, since it is smaller than the sum of its proper divisors (394703068806).

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

210216334464 is a wasteful number, since it uses less digits than its factorization.

210216334464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182479477 (or 182479462 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

Adding to 210216334464 its reverse (464433612012), we get a palindrome (674649946476).

The spelling of 210216334464 in words is "two hundred ten billion, two hundred sixteen million, three hundred thirty-four thousand, four hundred sixty-four".