68938777723 has 16 divisors (see below), whose sum is σ = 75109821696. Its totient is φ = 63017026560.

The previous prime is 68938777697. The next prime is 68938777751. The reversal of 68938777723 is 32777783986.

It is a cyclic number.

It is not a de Polignac number, because 68938777723 - 2³³ = 60348843131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68938777793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66336 + ... + 377197.

It is an arithmetic number, because the mean of its divisors is an integer number (4694363856).

Almost surely, 2^68938777723 is an apocalyptic number.

68938777723 is a deficient number, since it is larger than the sum of its proper divisors (6171043973).

68938777723 is a wasteful number, since it uses less digits than its factorization.

68938777723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443814.

The product of its digits is 149361408, while the sum is 67.

The spelling of 68938777723 in words is "sixty-eight billion, nine hundred thirty-eight million, seven hundred seventy-seven thousand, seven hundred twenty-three".