785685649952 has 96 divisors (see below), whose sum is σ = 1818002833920. Its totient is φ = 327182976000.

The previous prime is 785685649937. The next prime is 785685649967. The reversal of 785685649952 is 259946586587.

It is an interprime number because it is at equal distance from previous prime (785685649937) and next prime (785685649967).

It is a Harshad number since it is a multiple of its sum of digits (74).

It is a self number, because there is not a number n which added to its sum of digits gives 785685649952.

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 15 ways as a sum of consecutive naturals, for example, 6161174 + ... + 6287402.

It is an arithmetic number, because the mean of its divisors is an integer number (18937529520).

Almost surely, 2^785685649952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 785685649952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (909001416960).

785685649952 is an abundant number, since it is smaller than the sum of its proper divisors (1032317183968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

785685649952 is a wasteful number, since it uses less digits than its factorization.

785685649952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127034 (or 127026 counting only the distinct ones).

The product of its digits is 1306368000, while the sum is 74.

The spelling of 785685649952 in words is "seven hundred eighty-five billion, six hundred eighty-five million, six hundred forty-nine thousand, nine hundred fifty-two".