68422622738 has 18 divisors (see below), whose sum is σ = 105503899221. Its totient is φ = 33280022664.

The previous prime is 68422622729. The next prime is 68422622759. The reversal of 68422622738 is 83722622486.

It can be written as a sum of positive squares in 2 ways, for example, as 55202912209 + 13219710529 = 234953^2 + 114977^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=184963.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13684763 + ... + 13689761.

Almost surely, 2^68422622738 is an apocalyptic number.

68422622738 is a deficient number, since it is larger than the sum of its proper divisors (37081276483).

68422622738 is an frugal number, since it uses more digits than its factorization.

68422622738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10074 (or 5038 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 50.

Multiplying 68422622738 by its sum of digits (50), we get a square (3421131136900 = 1849630²).

The spelling of 68422622738 in words is "sixty-eight billion, four hundred twenty-two million, six hundred twenty-two thousand, seven hundred thirty-eight".