83858661778 has 8 divisors (see below), whose sum is σ = 125790893568. Its totient is φ = 41928363924.

The previous prime is 83858661767. The next prime is 83858661781. The reversal of 83858661778 is 87716685838.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369726 + ... + 551737.

It is an arithmetic number, because the mean of its divisors is an integer number (15723861696).

Almost surely, 2^83858661778 is an apocalyptic number.

83858661778 is a deficient number, since it is larger than the sum of its proper divisors (41932231790).

83858661778 is a wasteful number, since it uses less digits than its factorization.

83858661778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966968.

The product of its digits is 108380160, while the sum is 67.

The spelling of 83858661778 in words is "eighty-three billion, eight hundred fifty-eight million, six hundred sixty-one thousand, seven hundred seventy-eight".