2218550505498 has 48 divisors (see below), whose sum is σ = 4899270355200. Its totient is φ = 725367313440.

The previous prime is 2218550505497. The next prime is 2218550505517. The reversal of 2218550505498 is 8945050558122.

2218550505498 is a `hidden beast` number, since 2 + 2 + 1 + 85 + 50 + 505 + 4 + 9 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (2218550505497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2419938 + ... + 3208301.

It is an arithmetic number, because the mean of its divisors is an integer number (102068132400).

Almost surely, 2^{2218550505498} is an apocalyptic number.

2218550505498 is an abundant number, since it is smaller than the sum of its proper divisors (2680719849702).

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

2218550505498 is a wasteful number, since it uses less digits than its factorization.

2218550505498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628667 (or 5628664 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 54.

The spelling of 2218550505498 in words is "two trillion, two hundred eighteen billion, five hundred fifty million, five hundred five thousand, four hundred ninety-eight".