2215275488388 has 18 divisors (see below), whose sum is σ = 5599724151294. Its totient is φ = 738425162784.

The previous prime is 2215275488369. The next prime is 2215275488429. The reversal of 2215275488388 is 8838845725122.

2215275488388 is a `hidden beast` number, since 2 + 2 + 1 + 5 + 2 + 7 + 548 + 8 + 3 + 88 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2188026723204 + 27248765184 = 1479198^2 + 165072^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30767715081 + ... + 30767715152.

It is an arithmetic number, because the mean of its divisors is an integer number (311095786183).

Almost surely, 2^{2215275488388} is an apocalyptic number.

It is an amenable number.

2215275488388 is an abundant number, since it is smaller than the sum of its proper divisors (3384448662906).

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

2215275488388 is a wasteful number, since it uses less digits than its factorization.

2215275488388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61535430243 (or 61535430238 counting only the distinct ones).

The product of its digits is 68812800, while the sum is 63.

The spelling of 2215275488388 in words is "two trillion, two hundred fifteen billion, two hundred seventy-five million, four hundred eighty-eight thousand, three hundred eighty-eight".