77218483605 has 16 divisors (see below), whose sum is σ = 123574557120. Its totient is φ = 41174863488.

The previous prime is 77218483603. The next prime is 77218483651. The reversal of 77218483605 is 50638481277.

It is not a de Polignac number, because 77218483605 - 2¹ = 77218483603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77218483603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 443467 + ... + 592536.

It is an arithmetic number, because the mean of its divisors is an integer number (7723409820).

Almost surely, 2^77218483605 is an apocalyptic number.

It is an amenable number.

77218483605 is a deficient number, since it is larger than the sum of its proper divisors (46356073515).

77218483605 is a wasteful number, since it uses less digits than its factorization.

77218483605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040980.

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 77218483605 in words is "seventy-seven billion, two hundred eighteen million, four hundred eighty-three thousand, six hundred five".