213552905868 has 60 divisors (see below), whose sum is σ = 566601917112. Its totient is φ = 70121842560.

The previous prime is 213552905851. The next prime is 213552905933. The reversal of 213552905868 is 868509255312.

It is a happy number.

213552905868 is a `hidden beast` number, since 2 + 1 + 3 + 5 + 52 + 9 + 0 + 586 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4897053 + ... + 4940468.

Almost surely, 2^213552905868 is an apocalyptic number.

It is an amenable number.

213552905868 is an abundant number, since it is smaller than the sum of its proper divisors (353049011244).

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

213552905868 is a wasteful number, since it uses less digits than its factorization.

213552905868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9837604 (or 9837593 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 54.

The spelling of 213552905868 in words is "two hundred thirteen billion, five hundred fifty-two million, nine hundred five thousand, eight hundred sixty-eight".