82585816690 has 32 divisors (see below), whose sum is σ = 160105913856. Its totient is φ = 30490084800.

The previous prime is 82585816679. The next prime is 82585816697. The reversal of 82585816690 is 9661858528.

It is a super-2 number, since 2×82585816690² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82585816697) 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, 1515415 + ... + 1568965.

It is an arithmetic number, because the mean of its divisors is an integer number (5003309808).

Almost surely, 2^82585816690 is an apocalyptic number.

82585816690 is a deficient number, since it is larger than the sum of its proper divisors (77520097166).

82585816690 is a wasteful number, since it uses less digits than its factorization.

82585816690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65434.

The product of its (nonzero) digits is 8294400, while the sum is 58.

The spelling of 82585816690 in words is "eighty-two billion, five hundred eighty-five million, eight hundred sixteen thousand, six hundred ninety".