210591045604 has 27 divisors (see below), whose sum is σ = 374982966057. Its totient is φ = 103484236608.

The previous prime is 210591045601. The next prime is 210591045631. The reversal of 210591045604 is 406540195012.

The square root of 210591045604 is 458902.

It is a perfect power (a square), and thus also a powerful number.

210591045604 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 152644927204 + 57946118400 = 390698^2 + 240720^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210591045601) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 54148492 + ... + 54152380.

Almost surely, 2^210591045604 is an apocalyptic number.

210591045604 is the 458902-nd square number.

It is an amenable number.

210591045604 is a deficient number, since it is larger than the sum of its proper divisors (164391920453).

210591045604 is an frugal number, since it uses more digits than its factorization.

210591045604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7900 (or 3950 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 210591045604 in words is "two hundred ten billion, five hundred ninety-one million, forty-five thousand, six hundred four".