1244215352240 has 40 divisors (see below), whose sum is σ = 3306057937440. Its totient is φ = 426588120576.

The previous prime is 1244215352213. The next prime is 1244215352291. The reversal of 1244215352240 is 422535124421.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1244215352240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1110906005 + ... + 1110907124.

It is an arithmetic number, because the mean of its divisors is an integer number (82651448436).

Almost surely, 2^{1244215352240} is an apocalyptic number.

1244215352240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244215352240 is an abundant number, since it is smaller than the sum of its proper divisors (2061842585200).

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

1244215352240 is a wasteful number, since it uses less digits than its factorization.

1244215352240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221813149 (or 2221813143 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 1244215352240 in words is "one trillion, two hundred forty-four billion, two hundred fifteen million, three hundred fifty-two thousand, two hundred forty".