102688512855 has 16 divisors (see below), whose sum is σ = 164482790784. Its totient is φ = 54706816800.

The previous prime is 102688512853. The next prime is 102688512907. The reversal of 102688512855 is 558215886201.

It is a happy number.

It is not a de Polignac number, because 102688512855 - 2¹ = 102688512853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102688512798 and 102688512807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102688512853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3760321 + ... + 3787530.

It is an arithmetic number, because the mean of its divisors is an integer number (10280174424).

Almost surely, 2^102688512855 is an apocalyptic number.

102688512855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102688512855 is a deficient number, since it is larger than the sum of its proper divisors (61794277929).

102688512855 is an equidigital number, since it uses as much as digits as its factorization.

102688512855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7548766.

The product of its (nonzero) digits is 1536000, while the sum is 51.

The spelling of 102688512855 in words is "one hundred two billion, six hundred eighty-eight million, five hundred twelve thousand, eight hundred fifty-five".