216650453550 has 48 divisors (see below), whose sum is σ = 565571717760. Its totient is φ = 54732745440.

The previous prime is 216650453543. The next prime is 216650453561. The reversal of 216650453550 is 55354056612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38006002 + ... + 38011701.

It is an arithmetic number, because the mean of its divisors is an integer number (11782744120).

Almost surely, 2^216650453550 is an apocalyptic number.

216650453550 is an abundant number, since it is smaller than the sum of its proper divisors (348921264210).

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

216650453550 is a wasteful number, since it uses less digits than its factorization.

216650453550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76017737 (or 76017732 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 216650453550 in words is "two hundred sixteen billion, six hundred fifty million, four hundred fifty-three thousand, five hundred fifty".