1216240463652 has 24 divisors (see below), whose sum is σ = 2838694597536. Its totient is φ = 405299176128.

The previous prime is 1216240463651. The next prime is 1216240463663. The reversal of 1216240463652 is 2563640426121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1216240463651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14244633 + ... + 14329760.

It is an arithmetic number, because the mean of its divisors is an integer number (118278941564).

Almost surely, 2^{1216240463652} is an apocalyptic number.

1216240463652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1216240463652 is an abundant number, since it is smaller than the sum of its proper divisors (1622454133884).

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

1216240463652 is a wasteful number, since it uses less digits than its factorization.

1216240463652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28577947 (or 28577945 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

Adding to 1216240463652 its reverse (2563640426121), we get a palindrome (3779880889773).

The spelling of 1216240463652 in words is "one trillion, two hundred sixteen billion, two hundred forty million, four hundred sixty-three thousand, six hundred fifty-two".