83444266861 has 32 divisors (see below), whose sum is σ = 91592887680. Its totient is φ = 75744460800.

The previous prime is 83444266859. The next prime is 83444266903. The reversal of 83444266861 is 16866244438.

It is a cyclic number.

It is not a de Polignac number, because 83444266861 - 2¹ = 83444266859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83444266799 and 83444266808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83444266561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54788646 + ... + 54790168.

It is an arithmetic number, because the mean of its divisors is an integer number (2862277740).

Almost surely, 2^83444266861 is an apocalyptic number.

It is an amenable number.

83444266861 is a deficient number, since it is larger than the sum of its proper divisors (8148620819).

83444266861 is a wasteful number, since it uses less digits than its factorization.

83444266861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797.

The product of its digits is 5308416, while the sum is 52.

The spelling of 83444266861 in words is "eighty-three billion, four hundred forty-four million, two hundred sixty-six thousand, eight hundred sixty-one".