999853316699077 has 4 divisors (see below), whose sum is σ = 999853395750220. Its totient is φ = 999853237647936.

The previous prime is 999853316699071. The next prime is 999853316699123. The reversal of 999853316699077 is 770996613358999.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 783108789414561 + 216744527284516 = 27984081^2 + 14722246^2 .

It is a 3-Lehmer number, since φ(999853316699077) divides (999853316699077-1)³.

It is a cyclic number.

It is not a de Polignac number, because 999853316699077 - 2⁷ = 999853316698949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 999853316698982 and 999853316699000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999853316699071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15810228 + ... + 47430685.

It is an arithmetic number, because the mean of its divisors is an integer number (249963348937555).

It is a Poulet number, since it divides 2^{999853316699076}-1.

Almost surely, 2^{999853316699077} is an apocalyptic number.

999853316699077 is the 15810229-th decagonal number.

It is an amenable number.

999853316699077 is a deficient number, since it is larger than the sum of its proper divisors (79051143).

999853316699077 is a wasteful number, since it uses less digits than its factorization.

999853316699077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79051142.

The product of its (nonzero) digits is 37498476960, while the sum is 91.

The spelling of 999853316699077 in words is "nine hundred ninety-nine trillion, eight hundred fifty-three billion, three hundred sixteen million, six hundred ninety-nine thousand, seventy-seven".