68045780432 has 20 divisors (see below), whose sum is σ = 150672799776. Its totient is φ = 29162477280.

The previous prime is 68045780401. The next prime is 68045780527. The reversal of 68045780432 is 23408754086.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303775694 + ... + 303775917.

Almost surely, 2^68045780432 is an apocalyptic number.

It is an amenable number.

68045780432 is an abundant number, since it is smaller than the sum of its proper divisors (82627019344).

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

68045780432 is a wasteful number, since it uses less digits than its factorization.

68045780432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607551626 (or 607551620 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 47.

The spelling of 68045780432 in words is "sixty-eight billion, forty-five million, seven hundred eighty thousand, four hundred thirty-two".