216542638851032 has 32 divisors (see below), whose sum is σ = 437257710069600. Its totient is φ = 99940893341184.

The previous prime is 216542638851013. The next prime is 216542638851083. The reversal of 216542638851032 is 230158836245612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13793153 + ... + 24966704.

It is an arithmetic number, because the mean of its divisors is an integer number (13664303439675).

Almost surely, 2^{216542638851032} is an apocalyptic number.

It is an amenable number.

216542638851032 is an abundant number, since it is smaller than the sum of its proper divisors (220715071218568).

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

216542638851032 is a wasteful number, since it uses less digits than its factorization.

216542638851032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38813595 (or 38813591 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 56.

The spelling of 216542638851032 in words is "two hundred sixteen trillion, five hundred forty-two billion, six hundred thirty-eight million, eight hundred fifty-one thousand, thirty-two".