2215554054238 has 20 divisors (see below), whose sum is σ = 3876988912560. Its totient is φ = 949523164044.

The previous prime is 2215554054187. The next prime is 2215554054239. The reversal of 2215554054238 is 8324504555122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215554054239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 230685958 + ... + 230695561.

It is an arithmetic number, because the mean of its divisors is an integer number (193849445628).

Almost surely, 2^{2215554054238} is an apocalyptic number.

2215554054238 is a deficient number, since it is larger than the sum of its proper divisors (1661434858322).

2215554054238 is an frugal number, since it uses more digits than its factorization.

2215554054238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461381549 (or 461381528 counting only the distinct ones).

The product of its (nonzero) digits is 1920000, while the sum is 46.

The spelling of 2215554054238 in words is "two trillion, two hundred fifteen billion, five hundred fifty-four million, fifty-four thousand, two hundred thirty-eight".