83351911820 has 24 divisors (see below), whose sum is σ = 176843544864. Its totient is φ = 32997044736.

The previous prime is 83351911817. The next prime is 83351911823. The reversal of 83351911820 is 2811915338.

It is an interprime number because it is at equal distance from previous prime (83351911817) and next prime (83351911823).

It is not an unprimeable number, because it can be changed into a prime (83351911823) 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, 21480512 + ... + 21484391.

It is an arithmetic number, because the mean of its divisors is an integer number (7368481036).

Almost surely, 2^83351911820 is an apocalyptic number.

It is an amenable number.

83351911820 is an abundant number, since it is smaller than the sum of its proper divisors (93491633044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83351911820 is a wasteful number, since it uses less digits than its factorization.

83351911820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42965009 (or 42965007 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 41.

The spelling of 83351911820 in words is "eighty-three billion, three hundred fifty-one million, nine hundred eleven thousand, eight hundred twenty".