785642853680 has 80 divisors (see below), whose sum is σ = 1876803641760. Its totient is φ = 305630724096.

The previous prime is 785642853637. The next prime is 785642853703. The reversal of 785642853680 is 86358246587.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6890576 + ... + 7003664.

It is an arithmetic number, because the mean of its divisors is an integer number (23460045522).

Almost surely, 2^785642853680 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 785642853680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (938401820880).

785642853680 is an abundant number, since it is smaller than the sum of its proper divisors (1091160788080).

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

785642853680 is a wasteful number, since it uses less digits than its factorization.

785642853680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115486 (or 115480 counting only the distinct ones).

The product of its (nonzero) digits is 77414400, while the sum is 62.

The spelling of 785642853680 in words is "seven hundred eighty-five billion, six hundred forty-two million, eight hundred fifty-three thousand, six hundred eighty".