83780418668 has 6 divisors (see below), whose sum is σ = 146615732676. Its totient is φ = 41890209332.

The previous prime is 83780418641. The next prime is 83780418697. The reversal of 83780418668 is 86681408738.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10472552330 + ... + 10472552337.

It is an arithmetic number, because the mean of its divisors is an integer number (24435955446).

Almost surely, 2^83780418668 is an apocalyptic number.

It is an amenable number.

83780418668 is a deficient number, since it is larger than the sum of its proper divisors (62835314008).

83780418668 is a wasteful number, since it uses less digits than its factorization.

83780418668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20945104671 (or 20945104669 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 59.

The spelling of 83780418668 in words is "eighty-three billion, seven hundred eighty million, four hundred eighteen thousand, six hundred sixty-eight".