216953120308 has 12 divisors (see below), whose sum is σ = 380068883712. Its totient is φ = 108362010680.

The previous prime is 216953120299. The next prime is 216953120323. The reversal of 216953120308 is 803021359612.

It is a super-2 number, since 2×216953120308² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28633108 + ... + 28640683.

It is an arithmetic number, because the mean of its divisors is an integer number (31672406976).

Almost surely, 2^216953120308 is an apocalyptic number.

It is an amenable number.

216953120308 is a deficient number, since it is larger than the sum of its proper divisors (163115763404).

216953120308 is a wasteful number, since it uses less digits than its factorization.

216953120308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57274742 (or 57274740 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 216953120308 in words is "two hundred sixteen billion, nine hundred fifty-three million, one hundred twenty thousand, three hundred eight".