82667678654573 has 4 divisors (see below), whose sum is σ = 82668113464320. Its totient is φ = 82667243844828.

The previous prime is 82667678654569. The next prime is 82667678654579. The reversal of 82667678654573 is 37545687676628.

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 82667678654573 - 2² = 82667678654569 is a prime.

It is a super-2 number, since 2×82667678654573² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82667678654579) 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, 217119563 + ... + 217499976.

It is an arithmetic number, because the mean of its divisors is an integer number (20667028366080).

Almost surely, 2^{82667678654573} is an apocalyptic number.

It is an amenable number.

82667678654573 is a deficient number, since it is larger than the sum of its proper divisors (434809747).

82667678654573 is a wasteful number, since it uses less digits than its factorization.

82667678654573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434809746.

The product of its digits is 17069875200, while the sum is 80.

The spelling of 82667678654573 in words is "eighty-two trillion, six hundred sixty-seven billion, six hundred seventy-eight million, six hundred fifty-four thousand, five hundred seventy-three".