213335449524 has 18 divisors (see below), whose sum is σ = 539264608610. Its totient is φ = 71111816496.

The previous prime is 213335449493. The next prime is 213335449603. The reversal of 213335449524 is 425944533312.

213335449524 is a `hidden beast` number, since 2 + 1 + 3 + 33 + 54 + 49 + 524 = 666.

213335449524 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., 136395785124 + 76939664400 = 369318^2 + 277380^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 213335449524.

It is a congruent number.

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, 2962992319 + ... + 2962992390.

Almost surely, 2^213335449524 is an apocalyptic number.

It is an amenable number.

213335449524 is an abundant number, since it is smaller than the sum of its proper divisors (325929159086).

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

213335449524 is a wasteful number, since it uses less digits than its factorization.

213335449524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5925984719 (or 5925984714 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The spelling of 213335449524 in words is "two hundred thirteen billion, three hundred thirty-five million, four hundred forty-nine thousand, five hundred twenty-four".