2218534021048 has 8 divisors (see below), whose sum is σ = 4159751289480. Its totient is φ = 1109267010520.

The previous prime is 2218534021043. The next prime is 2218534021057. The reversal of 2218534021048 is 8401204358122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2218534021048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218534021043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138658376308 + ... + 138658376323.

It is an arithmetic number, because the mean of its divisors is an integer number (519968911185).

Almost surely, 2^{2218534021048} is an apocalyptic number.

It is an amenable number.

2218534021048 is a deficient number, since it is larger than the sum of its proper divisors (1941217268432).

2218534021048 is a wasteful number, since it uses less digits than its factorization.

2218534021048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277316752637 (or 277316752633 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 40.

The spelling of 2218534021048 in words is "two trillion, two hundred eighteen billion, five hundred thirty-four million, twenty-one thousand, forty-eight".