68210828455 has 128 divisors (see below), whose sum is σ = 107263180800. Its totient is φ = 40744281600.

The previous prime is 68210828447. The next prime is 68210828461. The reversal of 68210828455 is 55482801286.

It is not a de Polignac number, because 68210828455 - 2³ = 68210828447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68210828399 and 68210828408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 215175957 + ... + 215176273.

It is an arithmetic number, because the mean of its divisors is an integer number (837993600).

Almost surely, 2^68210828455 is an apocalyptic number.

68210828455 is a deficient number, since it is larger than the sum of its proper divisors (39052352345).

68210828455 is a wasteful number, since it uses less digits than its factorization.

68210828455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 49.

The spelling of 68210828455 in words is "sixty-eight billion, two hundred ten million, eight hundred twenty-eight thousand, four hundred fifty-five".