213188453532 has 36 divisors (see below), whose sum is σ = 539792744400. Its totient is φ = 70944174912.

The previous prime is 213188453509. The next prime is 213188453557. The reversal of 213188453532 is 235354881312.

213188453532 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 8 + 84 + 535 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4921593 + ... + 4964720.

It is an arithmetic number, because the mean of its divisors is an integer number (14994242900).

Almost surely, 2^213188453532 is an apocalyptic number.

It is an amenable number.

213188453532 is an abundant number, since it is smaller than the sum of its proper divisors (326604290868).

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

213188453532 is a wasteful number, since it uses less digits than its factorization.

213188453532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9886922 (or 9886917 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The spelling of 213188453532 in words is "two hundred thirteen billion, one hundred eighty-eight million, four hundred fifty-three thousand, five hundred thirty-two".