169808728216 has 32 divisors (see below), whose sum is σ = 320834085840. Its totient is φ = 84253431808.

The previous prime is 169808728147. The next prime is 169808728217. The reversal of 169808728216 is 612827808961.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169808728217) 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, 3088680 + ... + 3143176.

Almost surely, 2^169808728216 is an apocalyptic number.

It is an amenable number.

169808728216 is a deficient number, since it is larger than the sum of its proper divisors (151025357624).

169808728216 is a wasteful number, since it uses less digits than its factorization.

169808728216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57483 (or 57479 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 58.

The spelling of 169808728216 in words is "one hundred sixty-nine billion, eight hundred eight million, seven hundred twenty-eight thousand, two hundred sixteen".