83842638091588 has 6 divisors (see below), whose sum is σ = 146724616660286. Its totient is φ = 41921319045792.

The previous prime is 83842638091577. The next prime is 83842638091601. The reversal of 83842638091588 is 88519083624838.

It can be written as a sum of positive squares in only one way, i.e., 80597624953924 + 3245013137664 = 8977618^2 + 1801392^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 83842638091588.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10480329761445 + ... + 10480329761452.

Almost surely, 2^{83842638091588} is an apocalyptic number.

It is an amenable number.

83842638091588 is a deficient number, since it is larger than the sum of its proper divisors (62881978568698).

83842638091588 is a wasteful number, since it uses less digits than its factorization.

83842638091588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20960659522901 (or 20960659522899 counting only the distinct ones).

The product of its (nonzero) digits is 637009920, while the sum is 73.

The spelling of 83842638091588 in words is "eighty-three trillion, eight hundred forty-two billion, six hundred thirty-eight million, ninety-one thousand, five hundred eighty-eight".