213060521600 has 48 divisors (see below), whose sum is σ = 526326077670. Its totient is φ = 85224207360.

The previous prime is 213060521599. The next prime is 213060521621. The reversal of 213060521600 is 6125060312.

It can be written as a sum of positive squares in 3 ways, for example, as 169526533696 + 43533987904 = 411736^2 + 208648^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 213060521600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33287507 + ... + 33293906.

Almost surely, 2^213060521600 is an apocalyptic number.

213060521600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213060521600 is an abundant number, since it is smaller than the sum of its proper divisors (313265556070).

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

213060521600 is an equidigital number, since it uses as much as digits as its factorization.

213060521600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66581437 (or 66581420 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 213060521600 its reverse (6125060312), we get a palindrome (219185581912).

The spelling of 213060521600 in words is "two hundred thirteen billion, sixty million, five hundred twenty-one thousand, six hundred".