213353747688 has 32 divisors (see below), whose sum is σ = 538277810400. Its totient is φ = 70465457088.

The previous prime is 213353747683. The next prime is 213353747689. The reversal of 213353747688 is 886747353312.

It is not an unprimeable number, because it can be changed into a prime (213353747683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40776006 + ... + 40781237.

It is an arithmetic number, because the mean of its divisors is an integer number (16821181575).

Almost surely, 2^213353747688 is an apocalyptic number.

It is an amenable number.

213353747688 is an abundant number, since it is smaller than the sum of its proper divisors (324924062712).

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

213353747688 is a wasteful number, since it uses less digits than its factorization.

213353747688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81557361 (or 81557357 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 57.

The spelling of 213353747688 in words is "two hundred thirteen billion, three hundred fifty-three million, seven hundred forty-seven thousand, six hundred eighty-eight".