216129011558 has 16 divisors (see below), whose sum is σ = 338303056896. Its totient is φ = 103361719560.

The previous prime is 216129011557. The next prime is 216129011563. The reversal of 216129011558 is 855110921612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216129011557) 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, 1194443 + ... + 1363433.

It is an arithmetic number, because the mean of its divisors is an integer number (21143941056).

Almost surely, 2^216129011558 is an apocalyptic number.

216129011558 is a deficient number, since it is larger than the sum of its proper divisors (122174045338).

216129011558 is a wasteful number, since it uses less digits than its factorization.

216129011558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196819.

The product of its (nonzero) digits is 43200, while the sum is 41.

The spelling of 216129011558 in words is "two hundred sixteen billion, one hundred twenty-nine million, eleven thousand, five hundred fifty-eight".