83566466538 has 16 divisors (see below), whose sum is σ = 167135784960. Its totient is φ = 27855013536.

The previous prime is 83566466537. The next prime is 83566466593.

It is a happy number.

83566466538 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (83566466531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563406 + ... + 696102.

It is an arithmetic number, because the mean of its divisors is an integer number (10445986560).

Almost surely, 2^83566466538 is an apocalyptic number.

83566466538 is an abundant number, since it is smaller than the sum of its proper divisors (83569318422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83566466538 is a wasteful number, since it uses less digits than its factorization.

83566466538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237661.

The product of its digits is 74649600, while the sum is 60.

The spelling of 83566466538 in words is "eighty-three billion, five hundred sixty-six million, four hundred sixty-six thousand, five hundred thirty-eight".