68081142528 has 540 divisors, whose sum is σ = 236979299648. Its totient is φ = 18776862720.

The previous prime is 68081142517. The next prime is 68081142583. The reversal of 68081142528 is 82524118086.

68081142528 is a `hidden beast` number, since 6 + 8 + 0 + 8 + 114 + 2 + 528 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 171488826 + ... + 171489222.

Almost surely, 2^68081142528 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 68081142528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118489649824).

68081142528 is an abundant number, since it is smaller than the sum of its proper divisors (168898157120).

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

68081142528 is an equidigital number, since it uses as much as digits as its factorization.

68081142528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 68081142528 in words is "sixty-eight billion, eighty-one million, one hundred forty-two thousand, five hundred twenty-eight".