85303777816 has 8 divisors (see below), whose sum is σ = 159944583420. Its totient is φ = 42651888904.

The previous prime is 85303777813. The next prime is 85303777817. The reversal of 85303777816 is 61877730358.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85303777813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5331486106 + ... + 5331486121.

Almost surely, 2^85303777816 is an apocalyptic number.

It is an amenable number.

85303777816 is a deficient number, since it is larger than the sum of its proper divisors (74640805604).

85303777816 is a wasteful number, since it uses less digits than its factorization.

85303777816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10662972233 (or 10662972229 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 55.

The spelling of 85303777816 in words is "eighty-five billion, three hundred three million, seven hundred seventy-seven thousand, eight hundred sixteen".