216643652950 has 12 divisors (see below), whose sum is σ = 402957194580. Its totient is φ = 86657461160.

The previous prime is 216643652921. The next prime is 216643652977. The reversal of 216643652950 is 59256346612.

216643652950 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 216643652894 and 216643652903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2166436480 + ... + 2166436579.

It is an arithmetic number, because the mean of its divisors is an integer number (33579766215).

Almost surely, 2^216643652950 is an apocalyptic number.

216643652950 is a deficient number, since it is larger than the sum of its proper divisors (186313541630).

216643652950 is a wasteful number, since it uses less digits than its factorization.

216643652950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332873071 (or 4332873066 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 216643652950 in words is "two hundred sixteen billion, six hundred forty-three million, six hundred fifty-two thousand, nine hundred fifty".