68559474654 has 128 divisors (see below), whose sum is σ = 170489088000. Its totient is φ = 20246371200.

The previous prime is 68559474637. The next prime is 68559474673. The reversal of 68559474654 is 45647495586.

68559474654 is a `hidden beast` number, since 6 + 8 + 559 + 4 + 74 + 6 + 5 + 4 = 666.

It is a super-3 number, since 3×68559474654³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68559474591 and 68559474600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3940827 + ... + 3958185.

It is an arithmetic number, because the mean of its divisors is an integer number (1331946000).

Almost surely, 2^68559474654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68559474654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85244544000).

68559474654 is an abundant number, since it is smaller than the sum of its proper divisors (101929613346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68559474654 is a wasteful number, since it uses less digits than its factorization.

68559474654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17551 (or 17545 counting only the distinct ones).

The product of its digits is 145152000, while the sum is 63.

The spelling of 68559474654 in words is "sixty-eight billion, five hundred fifty-nine million, four hundred seventy-four thousand, six hundred fifty-four".