2215112641840 has 80 divisors (see below), whose sum is σ = 5918752961280. Its totient is φ = 755224323840.

The previous prime is 2215112641811. The next prime is 2215112641867. The reversal of 2215112641840 is 481462115122.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 2215112641840.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10948806 + ... + 11149285.

It is an arithmetic number, because the mean of its divisors is an integer number (73984412016).

Almost surely, 2^{2215112641840} is an apocalyptic number.

2215112641840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215112641840 is an abundant number, since it is smaller than the sum of its proper divisors (3703640319440).

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

2215112641840 is a wasteful number, since it uses less digits than its factorization.

2215112641840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22098290 (or 22098284 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

Adding to 2215112641840 its reverse (481462115122), we get a palindrome (2696574756962).

The spelling of 2215112641840 in words is "two trillion, two hundred fifteen billion, one hundred twelve million, six hundred forty-one thousand, eight hundred forty".