83638355788 has 24 divisors (see below), whose sum is σ = 157803926112. Its totient is φ = 38558776704.

The previous prime is 83638355783. The next prime is 83638355797. The reversal of 83638355788 is 88755383638.

It is not an unprimeable number, because it can be changed into a prime (83638355783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860545 + ... + 952792.

It is an arithmetic number, because the mean of its divisors is an integer number (6575163588).

Almost surely, 2^83638355788 is an apocalyptic number.

It is an amenable number.

83638355788 is a deficient number, since it is larger than the sum of its proper divisors (74165570324).

83638355788 is a wasteful number, since it uses less digits than its factorization.

83638355788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814241 (or 1814239 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 64.

The spelling of 83638355788 in words is "eighty-three billion, six hundred thirty-eight million, three hundred fifty-five thousand, seven hundred eighty-eight".