785685649953 has 16 divisors (see below), whose sum is σ = 1079126798400. Its totient is φ = 508160209920.

The previous prime is 785685649937. The next prime is 785685649967. The reversal of 785685649953 is 359946586587.

785685649953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 785685649953 - 2⁴ = 785685649937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (785685649913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17820688 + ... + 17864721.

It is an arithmetic number, because the mean of its divisors is an integer number (67445424900).

Almost surely, 2^785685649953 is an apocalyptic number.

It is an amenable number.

785685649953 is a deficient number, since it is larger than the sum of its proper divisors (293441148447).

785685649953 is a wasteful number, since it uses less digits than its factorization.

785685649953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35685632.

The product of its digits is 1959552000, while the sum is 75.

The spelling of 785685649953 in words is "seven hundred eighty-five billion, six hundred eighty-five million, six hundred forty-nine thousand, nine hundred fifty-three".