68571509504 has 72 divisors (see below), whose sum is σ = 144490891440. Its totient is φ = 32388415488.

The previous prime is 68571509497. The next prime is 68571509509. The reversal of 68571509504 is 40590517586.

It is not an unprimeable number, because it can be changed into a prime (68571509509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1697024 + ... + 1736960.

Almost surely, 2^68571509504 is an apocalyptic number.

68571509504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68571509504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72245445720).

68571509504 is an abundant number, since it is smaller than the sum of its proper divisors (75919381936).

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

68571509504 is a wasteful number, since it uses less digits than its factorization.

68571509504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40325 (or 40311 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 50.

The spelling of 68571509504 in words is "sixty-eight billion, five hundred seventy-one million, five hundred nine thousand, five hundred four".