2115422340240 has 160 divisors (see below), whose sum is σ = 7161072912000. Its totient is φ = 512320757760.

The previous prime is 2115422340217. The next prime is 2115422340253. The reversal of 2115422340240 is 420432245112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2115422340198 and 2115422340207.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2266686 + ... + 3060834.

It is an arithmetic number, because the mean of its divisors is an integer number (44756705700).

Almost surely, 2^{2115422340240} is an apocalyptic number.

2115422340240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2115422340240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3580536456000).

2115422340240 is an abundant number, since it is smaller than the sum of its proper divisors (5045650571760).

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

2115422340240 is a wasteful number, since it uses less digits than its factorization.

2115422340240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795185 (or 795179 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 2115422340240 its reverse (420432245112), we get a palindrome (2535854585352).

The spelling of 2115422340240 in words is "two trillion, one hundred fifteen billion, four hundred twenty-two million, three hundred forty thousand, two hundred forty".