82738021276717 has 4 divisors (see below), whose sum is σ = 83972917116736. Its totient is φ = 81503125436700.

The previous prime is 82738021276709. The next prime is 82738021276727. The reversal of 82738021276717 is 71767212083728.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82738021276717 - 2³ = 82738021276709 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 (82738021276727) 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, 617447919909 + ... + 617447920042.

It is an arithmetic number, because the mean of its divisors is an integer number (20993229279184).

Almost surely, 2^{82738021276717} is an apocalyptic number.

It is an amenable number.

82738021276717 is a deficient number, since it is larger than the sum of its proper divisors (1234895840019).

82738021276717 is a wasteful number, since it uses less digits than its factorization.

82738021276717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234895840018.

The product of its (nonzero) digits is 22127616, while the sum is 61.

The spelling of 82738021276717 in words is "eighty-two trillion, seven hundred thirty-eight billion, twenty-one million, two hundred seventy-six thousand, seven hundred seventeen".