68281243580 has 48 divisors (see below), whose sum is σ = 165627667296. Its totient is φ = 23368980480.

The previous prime is 68281243579. The next prime is 68281243621. The reversal of 68281243580 is 8534218286.

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, 9124769 + ... + 9132248.

It is an arithmetic number, because the mean of its divisors is an integer number (3450576402).

Almost surely, 2^68281243580 is an apocalyptic number.

It is an amenable number.

68281243580 is an abundant number, since it is smaller than the sum of its proper divisors (97346423716).

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

68281243580 is a wasteful number, since it uses less digits than its factorization.

68281243580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18257054 (or 18257052 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 47.

The spelling of 68281243580 in words is "sixty-eight billion, two hundred eighty-one million, two hundred forty-three thousand, five hundred eighty".