83683947766 has 16 divisors (see below), whose sum is σ = 133077179520. Its totient is φ = 39397847040.

The previous prime is 83683947733. The next prime is 83683947773. The reversal of 83683947766 is 66774938638.

It is a super-2 number, since 2×83683947766² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 18237451 + ... + 18242038.

It is an arithmetic number, because the mean of its divisors is an integer number (8317323720).

Almost surely, 2^83683947766 is an apocalyptic number.

83683947766 is a deficient number, since it is larger than the sum of its proper divisors (49393231754).

83683947766 is a wasteful number, since it uses less digits than its factorization.

83683947766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36479559.

The product of its digits is 219469824, while the sum is 67.

The spelling of 83683947766 in words is "eighty-three billion, six hundred eighty-three million, nine hundred forty-seven thousand, seven hundred sixty-six".