82768505778541 has 8 divisors (see below), whose sum is σ = 95045174100000. Its totient is φ = 71283880574640.

The previous prime is 82768505778479. The next prime is 82768505778547. The reversal of 82768505778541 is 14587750586728.

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

It is a cyclic number.

It is not a de Polignac number, because 82768505778541 - 2¹¹ = 82768505776493 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 (82768505778547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198010779166 + ... + 198010779583.

It is an arithmetic number, because the mean of its divisors is an integer number (11880646762500).

Almost surely, 2^{82768505778541} is an apocalyptic number.

It is an amenable number.

82768505778541 is a deficient number, since it is larger than the sum of its proper divisors (12276668321459).

82768505778541 is a wasteful number, since it uses less digits than its factorization.

82768505778541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396021558779.

The product of its (nonzero) digits is 1053696000, while the sum is 73.

The spelling of 82768505778541 in words is "eighty-two trillion, seven hundred sixty-eight billion, five hundred five million, seven hundred seventy-eight thousand, five hundred forty-one".