210153981568 has 32 divisors (see below), whose sum is σ = 440701200000. Its totient is φ = 99546621696.

The previous prime is 210153981509. The next prime is 210153981581. The reversal of 210153981568 is 865189351012.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43203568 + ... + 43208431.

It is an arithmetic number, because the mean of its divisors is an integer number (13771912500).

Almost surely, 2^210153981568 is an apocalyptic number.

It is an amenable number.

210153981568 is an abundant number, since it is smaller than the sum of its proper divisors (230547218432).

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

210153981568 is an equidigital number, since it uses as much as digits as its factorization.

210153981568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86412032 (or 86412020 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 49.

The spelling of 210153981568 in words is "two hundred ten billion, one hundred fifty-three million, nine hundred eighty-one thousand, five hundred sixty-eight".