68445238746 has 32 divisors (see below), whose sum is σ = 138349165248. Its totient is φ = 22572126720.

The previous prime is 68445238739. The next prime is 68445238817. The reversal of 68445238746 is 64783254486.

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, 1822276 + ... + 1859456.

It is an arithmetic number, because the mean of its divisors is an integer number (4323411414).

Almost surely, 2^68445238746 is an apocalyptic number.

68445238746 is an abundant number, since it is smaller than the sum of its proper divisors (69903926502).

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

68445238746 is a wasteful number, since it uses less digits than its factorization.

68445238746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40446.

The product of its digits is 30965760, while the sum is 57.

The spelling of 68445238746 in words is "sixty-eight billion, four hundred forty-five million, two hundred thirty-eight thousand, seven hundred forty-six".