1216658041532 has 48 divisors (see below), whose sum is σ = 2154001584000. Its totient is φ = 601278873408.

The previous prime is 1216658041531. The next prime is 1216658041541. The reversal of 1216658041532 is 2351408566121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216658041531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95320583 + ... + 95333345.

It is an arithmetic number, because the mean of its divisors is an integer number (44875033000).

Almost surely, 2^{1216658041532} is an apocalyptic number.

It is an amenable number.

1216658041532 is a deficient number, since it is larger than the sum of its proper divisors (937343542468).

1216658041532 is a wasteful number, since it uses less digits than its factorization.

1216658041532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13722 (or 13720 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 1216658041532 in words is "one trillion, two hundred sixteen billion, six hundred fifty-eight million, forty-one thousand, five hundred thirty-two".