83505281355011 has 4 divisors (see below), whose sum is σ = 84332066319024. Its totient is φ = 82678496391000.

The previous prime is 83505281354953. The next prime is 83505281355047. The reversal of 83505281355011 is 11055318250538.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83505281355011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83505281355091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413392481855 + ... + 413392482056.

It is an arithmetic number, because the mean of its divisors is an integer number (21083016579756).

Almost surely, 2^{83505281355011} is an apocalyptic number.

83505281355011 is a deficient number, since it is larger than the sum of its proper divisors (826784964013).

83505281355011 is a wasteful number, since it uses less digits than its factorization.

83505281355011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826784964012.

The product of its (nonzero) digits is 720000, while the sum is 47.

The spelling of 83505281355011 in words is "eighty-three trillion, five hundred five billion, two hundred eighty-one million, three hundred fifty-five thousand, eleven".