68626828280 has 64 divisors (see below), whose sum is σ = 158647114080. Its totient is φ = 26701516800.

The previous prime is 68626828223. The next prime is 68626828307. The reversal of 68626828280 is 8282862686.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490595 + ... + 614765.

Almost surely, 2^68626828280 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 68626828280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79323557040).

68626828280 is an abundant number, since it is smaller than the sum of its proper divisors (90020285800).

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

68626828280 is a wasteful number, since it uses less digits than its factorization.

68626828280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124560 (or 124556 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 56.

The spelling of 68626828280 in words is "sixty-eight billion, six hundred twenty-six million, eight hundred twenty-eight thousand, two hundred eighty".