81052183651426 has 16 divisors (see below), whose sum is σ = 130969780918200. Its totient is φ = 37397462888448.

The previous prime is 81052183651381. The next prime is 81052183651469. The reversal of 81052183651426 is 62415638125018.

It can be written as a sum of positive squares in 4 ways, for example, as 67263208002225 + 13788975649201 = 8201415^2 + 3713351^2 .

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, 468130881 + ... + 468303988.

Almost surely, 2^{81052183651426} is an apocalyptic number.

81052183651426 is a deficient number, since it is larger than the sum of its proper divisors (49917597266774).

81052183651426 is a wasteful number, since it uses less digits than its factorization.

81052183651426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936438213.

The product of its (nonzero) digits is 2764800, while the sum is 52.

The spelling of 81052183651426 in words is "eighty-one trillion, fifty-two billion, one hundred eighty-three million, six hundred fifty-one thousand, four hundred twenty-six".