85783865993764 has 9 divisors (see below), whose sum is σ = 150121797905947. Its totient is φ = 42891923734924.

The previous prime is 85783865993713. The next prime is 85783865993779. The reversal of 85783865993764 is 46739956838758.

It is a happy number.

The square root of 85783865993764 is 9261958.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 16208427 + ... + 20839405.

Almost surely, 2^{85783865993764} is an apocalyptic number.

85783865993764 is the 9261958-th square number.

It is an amenable number.

85783865993764 is a deficient number, since it is larger than the sum of its proper divisors (64337931912183).

85783865993764 is an frugal number, since it uses more digits than its factorization.

85783865993764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9261962 (or 4630981 counting only the distinct ones).

The product of its digits is 65840947200, while the sum is 88.

The spelling of 85783865993764 in words is "eighty-five trillion, seven hundred eighty-three billion, eight hundred sixty-five million, nine hundred ninety-three thousand, seven hundred sixty-four".