83680788757 has 16 divisors (see below), whose sum is σ = 85072458240. Its totient is φ = 82302620400.

The previous prime is 83680788677. The next prime is 83680788769. The reversal of 83680788757 is 75788708638.

It is a cyclic number.

It is not a de Polignac number, because 83680788757 - 2³¹ = 81533305109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83680788692 and 83680788701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83680788857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11486238 + ... + 11493520.

It is an arithmetic number, because the mean of its divisors is an integer number (5317028640).

Almost surely, 2^83680788757 is an apocalyptic number.

It is an amenable number.

83680788757 is a deficient number, since it is larger than the sum of its proper divisors (1391669483).

83680788757 is a wasteful number, since it uses less digits than its factorization.

83680788757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8184.

The product of its (nonzero) digits is 126443520, while the sum is 67.

The spelling of 83680788757 in words is "eighty-three billion, six hundred eighty million, seven hundred eighty-eight thousand, seven hundred fifty-seven".