82685940481 has 16 divisors (see below), whose sum is σ = 85265042688. Its totient is φ = 80147390400.

The previous prime is 82685940461. The next prime is 82685940503. The reversal of 82685940481 is 18404958628.

It is a cyclic number.

It is not a de Polignac number, because 82685940481 - 2²⁵ = 82652386049 is a prime.

It is a super-2 number, since 2×82685940481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82685940451) 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, 15272731 + ... + 15278143.

It is an arithmetic number, because the mean of its divisors is an integer number (5329065168).

Almost surely, 2^82685940481 is an apocalyptic number.

It is an amenable number.

82685940481 is a deficient number, since it is larger than the sum of its proper divisors (2579102207).

82685940481 is a wasteful number, since it uses less digits than its factorization.

82685940481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9072.

The product of its (nonzero) digits is 4423680, while the sum is 55.

The spelling of 82685940481 in words is "eighty-two billion, six hundred eighty-five million, nine hundred forty thousand, four hundred eighty-one".