1216240463599 has 24 divisors (see below), whose sum is σ = 1463736128400. Its totient is φ = 1006448083200.

The previous prime is 1216240463593. The next prime is 1216240463651. The reversal of 1216240463599 is 9953640426121.

It is a happy number.

It is not a de Polignac number, because 1216240463599 - 2¹¹ = 1216240461551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216240463593) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17587312 + ... + 17656330.

It is an arithmetic number, because the mean of its divisors is an integer number (60989005350).

Almost surely, 2^{1216240463599} is an apocalyptic number.

1216240463599 is a deficient number, since it is larger than the sum of its proper divisors (247495664801).

1216240463599 is a wasteful number, since it uses less digits than its factorization.

1216240463599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81463 (or 81456 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 52.

The spelling of 1216240463599 in words is "one trillion, two hundred sixteen billion, two hundred forty million, four hundred sixty-three thousand, five hundred ninety-nine".