68587725888 has 392 divisors, whose sum is σ = 224873820000. Its totient is φ = 20573429760.

The previous prime is 68587725863. The next prime is 68587725907. The reversal of 68587725888 is 88852778586.

It is a super-2 number, since 2×68587725888² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 54913488 + ... + 54914736.

Almost surely, 2^68587725888 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 68587725888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112436910000).

68587725888 is an abundant number, since it is smaller than the sum of its proper divisors (156286094112).

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

68587725888 is a wasteful number, since it uses less digits than its factorization.

68587725888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397 (or 1372 counting only the distinct ones).

The product of its digits is 481689600, while the sum is 72.

The spelling of 68587725888 in words is "sixty-eight billion, five hundred eighty-seven million, seven hundred twenty-five thousand, eight hundred eighty-eight".