82354938465 has 24 divisors (see below), whose sum is σ = 139974906240. Its totient is φ = 41338947328.

The previous prime is 82354938433. The next prime is 82354938469. The reversal of 82354938465 is 56483945328.

It is not a de Polignac number, because 82354938465 - 2⁵ = 82354938433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82354938469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9494505 + ... + 9503174.

It is an arithmetic number, because the mean of its divisors is an integer number (5832287760).

Almost surely, 2^82354938465 is an apocalyptic number.

82354938465 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

82354938465 is a deficient number, since it is larger than the sum of its proper divisors (57619967775).

82354938465 is a wasteful number, since it uses less digits than its factorization.

82354938465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18997721 (or 18997704 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 57.

The spelling of 82354938465 in words is "eighty-two billion, three hundred fifty-four million, nine hundred thirty-eight thousand, four hundred sixty-five".