80684435056853 has 4 divisors (see below), whose sum is σ = 81656536684128. Its totient is φ = 79712333429580.

The previous prime is 80684435056837. The next prime is 80684435056873. The reversal of 80684435056853 is 35865053448608.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80684435056853 - 2⁴ = 80684435056837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80684435056853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80684435056873) 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, 486050813513 + ... + 486050813678.

It is an arithmetic number, because the mean of its divisors is an integer number (20414134171032).

Almost surely, 2^{80684435056853} is an apocalyptic number.

80684435056853 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

It is an amenable number.

80684435056853 is a deficient number, since it is larger than the sum of its proper divisors (972101627275).

80684435056853 is an equidigital number, since it uses as much as digits as its factorization.

80684435056853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972101627274.

The product of its (nonzero) digits is 331776000, while the sum is 65.

The spelling of 80684435056853 in words is "eighty trillion, six hundred eighty-four billion, four hundred thirty-five million, fifty-six thousand, eight hundred fifty-three".