86779241638 has 8 divisors (see below), whose sum is σ = 135828378288. Its totient is φ = 41503115544.

The previous prime is 86779241567. The next prime is 86779241663. The reversal of 86779241638 is 83614297768.

It is a happy number.

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

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, 943252581 + ... + 943252672.

It is an arithmetic number, because the mean of its divisors is an integer number (16978547286).

Almost surely, 2^86779241638 is an apocalyptic number.

86779241638 is a deficient number, since it is larger than the sum of its proper divisors (49049136650).

86779241638 is a wasteful number, since it uses less digits than its factorization.

86779241638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886505278.

The product of its digits is 24385536, while the sum is 61.

The spelling of 86779241638 in words is "eighty-six billion, seven hundred seventy-nine million, two hundred forty-one thousand, six hundred thirty-eight".