218870000408 has 32 divisors (see below), whose sum is σ = 416609146800. Its totient is φ = 107775034752.

The previous prime is 218870000399. The next prime is 218870000411. The reversal of 218870000408 is 804000078812.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2218466 + ... + 2315022.

Almost surely, 2^218870000408 is an apocalyptic number.

It is an amenable number.

218870000408 is a deficient number, since it is larger than the sum of its proper divisors (197739146392).

218870000408 is a wasteful number, since it uses less digits than its factorization.

218870000408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100859 (or 100855 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The spelling of 218870000408 in words is "two hundred eighteen billion, eight hundred seventy million, four hundred eight", and thus it is an aban number.