82438064015 has 4 divisors (see below), whose sum is σ = 98925676824. Its totient is φ = 65950451208.

The previous prime is 82438063993. The next prime is 82438064017. The reversal of 82438064015 is 51046083428.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82438064015 - 2¹⁴ = 82438047631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82438064017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8243806397 + ... + 8243806406.

It is an arithmetic number, because the mean of its divisors is an integer number (24731419206).

Almost surely, 2^82438064015 is an apocalyptic number.

82438064015 is a deficient number, since it is larger than the sum of its proper divisors (16487612809).

82438064015 is a wasteful number, since it uses less digits than its factorization.

82438064015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16487612808.

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 82438064015 in words is "eighty-two billion, four hundred thirty-eight million, sixty-four thousand, fifteen".