102788635816 has 16 divisors (see below), whose sum is σ = 192738266100. Its totient is φ = 51391764864.

The previous prime is 102788635801. The next prime is 102788635823. The reversal of 102788635816 is 618536887201.

It can be written as a sum of positive squares in 2 ways, for example, as 100026712900 + 2761922916 = 316270^2 + 52554^2 .

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, 142255 + ... + 475198.

Almost surely, 2^102788635816 is an apocalyptic number.

It is an amenable number.

102788635816 is a deficient number, since it is larger than the sum of its proper divisors (89949630284).

102788635816 is a wasteful number, since it uses less digits than its factorization.

102788635816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638268 (or 638264 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 102788635816 in words is "one hundred two billion, seven hundred eighty-eight million, six hundred thirty-five thousand, eight hundred sixteen".