68115745404 has 576 divisors, whose sum is σ = 221297836032. Its totient is φ = 17244057600.

The previous prime is 68115745393. The next prime is 68115745409. The reversal of 68115745404 is 40454751186.

68115745404 is a `hidden beast` number, since 68 + 11 + 574 + 5 + 4 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 68115745404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68115745409) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 536344389 + ... + 536344515.

It is an arithmetic number, because the mean of its divisors is an integer number (384197632).

Almost surely, 2^68115745404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68115745404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110648918016).

68115745404 is an abundant number, since it is smaller than the sum of its proper divisors (153182090628).

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

68115745404 is a wasteful number, since it uses less digits than its factorization.

68115745404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 68115745404 in words is "sixty-eight billion, one hundred fifteen million, seven hundred forty-five thousand, four hundred four".