213616521249 has 16 divisors (see below), whose sum is σ = 291011727360. Its totient is φ = 139318866000.

The previous prime is 213616521203. The next prime is 213616521277. The reversal of 213616521249 is 942125616312.

It is not a de Polignac number, because 213616521249 - 2⁸ = 213616520993 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 213616521249.

It is not an unprimeable number, because it can be changed into a prime (213616521949) 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, 19129 + ... + 653910.

It is an arithmetic number, because the mean of its divisors is an integer number (18188232960).

Almost surely, 2^213616521249 is an apocalyptic number.

It is an amenable number.

213616521249 is a deficient number, since it is larger than the sum of its proper divisors (77395206111).

213616521249 is a wasteful number, since it uses less digits than its factorization.

213616521249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675340.

The product of its digits is 155520, while the sum is 42.

The spelling of 213616521249 in words is "two hundred thirteen billion, six hundred sixteen million, five hundred twenty-one thousand, two hundred forty-nine".