82665400275438 has 8 divisors (see below), whose sum is σ = 165330800550888. Its totient is φ = 27555133425144.

The previous prime is 82665400275421. The next prime is 82665400275443. The reversal of 82665400275438 is 83457200456628.

82665400275438 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

82665400275438 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6888783356281 + ... + 6888783356292.

It is an arithmetic number, because the mean of its divisors is an integer number (20666350068861).

Almost surely, 2^{82665400275438} is an apocalyptic number.

82665400275438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

82665400275438 is a wasteful number, since it uses less digits than its factorization.

82665400275438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13777566712578.

The product of its (nonzero) digits is 77414400, while the sum is 60.

The spelling of 82665400275438 in words is "eighty-two trillion, six hundred sixty-five billion, four hundred million, two hundred seventy-five thousand, four hundred thirty-eight".