8216585377 has 16 divisors (see below), whose sum is σ = 11032060032. Its totient is φ = 5910030720.

The previous prime is 8216585357. The next prime is 8216585387. The reversal of 8216585377 is 7735856128.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-8216585377 is a prime.

It is a super-3 number, since 3×8216585377³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (8216585327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4103188 + ... + 4105189.

It is an arithmetic number, because the mean of its divisors is an integer number (689503752).

Almost surely, 2^8216585377 is an apocalyptic number.

It is an amenable number.

8216585377 is a deficient number, since it is larger than the sum of its proper divisors (2815474655).

8216585377 is a wasteful number, since it uses less digits than its factorization.

8216585377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8208408.

The product of its digits is 2822400, while the sum is 52.

The square root of 8216585377 is about 90645.3825464927. The cubic root of 8216585377 is about 2017.8883086151. Note that the first 3 decimals are identical.

It can be divided in two parts, 82165853 and 77, that multiplied together give a square (6326770681 = 79541²).

The spelling of 8216585377 in words is "eight billion, two hundred sixteen million, five hundred eighty-five thousand, three hundred seventy-seven".