68478248655 has 24 divisors (see below), whose sum is σ = 118952029248. Its totient is φ = 36442840896.

The previous prime is 68478248633. The next prime is 68478248753. The reversal of 68478248655 is 55684287486.

68478248655 is a `hidden beast` number, since 6 + 84 + 78 + 2 + 486 + 5 + 5 = 666.

It is not a de Polignac number, because 68478248655 - 2¹⁴ = 68478232271 is a prime.

It is a super-3 number, since 3×68478248655³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68478248592 and 68478248601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1622512 + ... + 1664181.

It is an arithmetic number, because the mean of its divisors is an integer number (4956334552).

Almost surely, 2^68478248655 is an apocalyptic number.

68478248655 is a deficient number, since it is larger than the sum of its proper divisors (50473780593).

68478248655 is a wasteful number, since it uses less digits than its factorization.

68478248655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287167 (or 3287164 counting only the distinct ones).

The product of its digits is 103219200, while the sum is 63.

The spelling of 68478248655 in words is "sixty-eight billion, four hundred seventy-eight million, two hundred forty-eight thousand, six hundred fifty-five".