213868988850 has 96 divisors (see below), whose sum is σ = 584230892544. Its totient is φ = 51343617600.

The previous prime is 213868988789. The next prime is 213868988857. The reversal of 213868988850 is 58889868312.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (213868988857) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 459262 + ... + 799161.

It is an arithmetic number, because the mean of its divisors is an integer number (6085738464).

Almost surely, 2^213868988850 is an apocalyptic number.

213868988850 is an abundant number, since it is smaller than the sum of its proper divisors (370361903694).

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

213868988850 is a wasteful number, since it uses less digits than its factorization.

213868988850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258552 (or 1258547 counting only the distinct ones).

The product of its (nonzero) digits is 53084160, while the sum is 66.

The spelling of 213868988850 in words is "two hundred thirteen billion, eight hundred sixty-eight million, nine hundred eighty-eight thousand, eight hundred fifty".