72442444424426 has 16 divisors (see below), whose sum is σ = 108687857711688. Its totient is φ = 36213159360000.

The previous prime is 72442444424417. The next prime is 72442444424443. The reversal of 72442444424426 is 62442444424427.

It can be written as a sum of positive squares in 4 ways, for example, as 72029253870025 + 413190554401 = 8487005^2 + 642799^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180999986 + ... + 181399778.

Almost surely, 2^{72442444424426} is an apocalyptic number.

72442444424426 is a deficient number, since it is larger than the sum of its proper divisors (36245413287262).

72442444424426 is a wasteful number, since it uses less digits than its factorization.

72442444424426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419737.

The product of its digits is 44040192, while the sum is 53.

Subtracting from 72442444424426 its reverse (62442444424427), we obtain a palindrome (9999999999999).

The spelling of 72442444424426 in words is "seventy-two trillion, four hundred forty-two billion, four hundred forty-four million, four hundred twenty-four thousand, four hundred twenty-six".