83985380047 has 2 divisors, whose sum is σ = 83985380048. Its totient is φ = 83985380046.

The previous prime is 83985380033. The next prime is 83985380131. The reversal of 83985380047 is 74008358938.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83985380047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83985380047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83985380747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41992690023 + 41992690024.

It is an arithmetic number, because the mean of its divisors is an integer number (41992690024).

Almost surely, 2^83985380047 is an apocalyptic number.

83985380047 is a deficient number, since it is larger than the sum of its proper divisors (1).

83985380047 is an equidigital number, since it uses as much as digits as its factorization.

83985380047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 83985380047 in words is "eighty-three billion, nine hundred eighty-five million, three hundred eighty thousand, forty-seven".