72442244810 has 16 divisors (see below), whose sum is σ = 140426505576. Its totient is φ = 26747905728.

The previous prime is 72442244783. The next prime is 72442244843. The reversal of 72442244810 is 1844224427.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 63822422161 + 8619822649 = 252631^2 + 92843^2 .

It is a super-2 number, since 2×72442244810² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

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, 278623889 + ... + 278624148.

Almost surely, 2^72442244810 is an apocalyptic number.

72442244810 is a deficient number, since it is larger than the sum of its proper divisors (67984260766).

72442244810 is a wasteful number, since it uses less digits than its factorization.

72442244810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557248057.

The product of its (nonzero) digits is 114688, while the sum is 38.

The spelling of 72442244810 in words is "seventy-two billion, four hundred forty-two million, two hundred forty-four thousand, eight hundred ten".