780232117920 has 192 divisors, whose sum is σ = 2510879648256. Its totient is φ = 203565588480.

The previous prime is 780232117913. The next prime is 780232117921. The reversal of 780232117920 is 29711232087.

780232117920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (780232117921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122655540 + ... + 122661900.

It is an arithmetic number, because the mean of its divisors is an integer number (13077498168).

Almost surely, 2^780232117920 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 780232117920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1255439824128).

780232117920 is an abundant number, since it is smaller than the sum of its proper divisors (1730647530336).

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

780232117920 is a wasteful number, since it uses less digits than its factorization.

780232117920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11863 (or 11855 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 780232117920 in words is "seven hundred eighty billion, two hundred thirty-two million, one hundred seventeen thousand, nine hundred twenty".