83656466465638 has 16 divisors (see below), whose sum is σ = 139212609837120. Its totient is φ = 37381163751400.

The previous prime is 83656466465569. The next prime is 83656466465639.

83656466465638 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83656466465639) 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, 32225139868 + ... + 32225142463.

It is an arithmetic number, because the mean of its divisors is an integer number (8700788114820).

Almost surely, 2^{83656466465638} is an apocalyptic number.

83656466465638 is a deficient number, since it is larger than the sum of its proper divisors (55556143371482).

83656466465638 is a wasteful number, since it uses less digits than its factorization.

83656466465638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64450282403.

The product of its digits is 10749542400, while the sum is 76.

The spelling of 83656466465638 in words is "eighty-three trillion, six hundred fifty-six billion, four hundred sixty-six million, four hundred sixty-five thousand, six hundred thirty-eight".