2215243704640 has 56 divisors (see below), whose sum is σ = 5504399049600. Its totient is φ = 847571501568.

The previous prime is 2215243704601. The next prime is 2215243704677. The reversal of 2215243704640 is 464073425122.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 2215243704593 and 2215243704602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150484740 + ... + 150499459.

Almost surely, 2^{2215243704640} is an apocalyptic number.

2215243704640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2215243704640 is an abundant number, since it is smaller than the sum of its proper divisors (3289155344960).

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

2215243704640 is a wasteful number, since it uses less digits than its factorization.

2215243704640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300984239 (or 300984229 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 40.

The spelling of 2215243704640 in words is "two trillion, two hundred fifteen billion, two hundred forty-three million, seven hundred four thousand, six hundred forty".