83840442826 has 16 divisors (see below), whose sum is σ = 143901555840. Its totient is φ = 35887847760.

The previous prime is 83840442787. The next prime is 83840442827. The reversal of 83840442826 is 62824404838.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 83840442826.

It is not an unprimeable number, because it can be changed into a prime (83840442827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3635646 + ... + 3658633.

It is an arithmetic number, because the mean of its divisors is an integer number (8993847240).

Almost surely, 2^83840442826 is an apocalyptic number.

83840442826 is a deficient number, since it is larger than the sum of its proper divisors (60061113014).

83840442826 is a wasteful number, since it uses less digits than its factorization.

83840442826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7295109.

The product of its (nonzero) digits is 2359296, while the sum is 49.

The spelling of 83840442826 in words is "eighty-three billion, eight hundred forty million, four hundred forty-two thousand, eight hundred twenty-six".