68720525286 has 32 divisors (see below), whose sum is σ = 157150878720. Its totient is φ = 19625011776.

The previous prime is 68720525273. The next prime is 68720525287. The reversal of 68720525286 is 68252502786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68720525287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303886 + ... + 479361.

It is an arithmetic number, because the mean of its divisors is an integer number (4910964960).

Almost surely, 2^68720525286 is an apocalyptic number.

68720525286 is an abundant number, since it is smaller than the sum of its proper divisors (88430353434).

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

68720525286 is a wasteful number, since it uses less digits than its factorization.

68720525286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785348.

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 68720525286 in words is "sixty-eight billion, seven hundred twenty million, five hundred twenty-five thousand, two hundred eighty-six".