785887122816 has 192 divisors, whose sum is σ = 2326255953840. Its totient is φ = 254561587200.

The previous prime is 785887122791. The next prime is 785887122817. The reversal of 785887122816 is 618221788587.

785887122816 is a `hidden beast` number, since 7 + 8 + 588 + 7 + 12 + 28 + 16 = 666.

785887122816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785887122817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5765206 + ... + 5899946.

Almost surely, 2^785887122816 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 785887122816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1163127976920).

785887122816 is an abundant number, since it is smaller than the sum of its proper divisors (1540368831024).

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

785887122816 is a wasteful number, since it uses less digits than its factorization.

785887122816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134905 (or 134890 counting only the distinct ones).

The product of its digits is 24084480, while the sum is 63.

The spelling of 785887122816 in words is "seven hundred eighty-five billion, eight hundred eighty-seven million, one hundred twenty-two thousand, eight hundred sixteen".