83991135248 has 20 divisors (see below), whose sum is σ = 162739753260. Its totient is φ = 41993779584.

The previous prime is 83991135209. The next prime is 83991135301. The reversal of 83991135248 is 84253119938.

It can be written as a sum of positive squares in 2 ways, for example, as 63699702544 + 20291432704 = 252388^2 + 142448^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 83991135248.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328286 + ... + 525122.

It is an arithmetic number, because the mean of its divisors is an integer number (8136987663).

Almost surely, 2^83991135248 is an apocalyptic number.

It is an amenable number.

83991135248 is a deficient number, since it is larger than the sum of its proper divisors (78748618012).

83991135248 is a wasteful number, since it uses less digits than its factorization.

83991135248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223514 (or 223508 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 53.

The spelling of 83991135248 in words is "eighty-three billion, nine hundred ninety-one million, one hundred thirty-five thousand, two hundred forty-eight".