83087217952853 has 4 divisors (see below), whose sum is σ = 84654901310508. Its totient is φ = 81519534595200.

The previous prime is 83087217952841. The next prime is 83087217952891. The reversal of 83087217952853 is 35825971278038.

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

It can be written as a sum of positive squares in 2 ways, for example, as 72504577861444 + 10582640091409 = 8514962^2 + 3253097^2 .

It is a cyclic number.

It is not a de Polignac number, because 83087217952853 - 2⁸ = 83087217952597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83087217958853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783841678748 + ... + 783841678853.

It is an arithmetic number, because the mean of its divisors is an integer number (21163725327627).

Almost surely, 2^{83087217952853} is an apocalyptic number.

It is an amenable number.

83087217952853 is a deficient number, since it is larger than the sum of its proper divisors (1567683357655).

83087217952853 is a wasteful number, since it uses less digits than its factorization.

83087217952853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567683357654.

The product of its (nonzero) digits is 203212800, while the sum is 68.

The spelling of 83087217952853 in words is "eighty-three trillion, eighty-seven billion, two hundred seventeen million, nine hundred fifty-two thousand, eight hundred fifty-three".