780645032916 has 144 divisors (see below), whose sum is σ = 2223104712192. Its totient is φ = 212307782400.

The previous prime is 780645032891. The next prime is 780645032929. The reversal of 780645032916 is 619230546087.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 760870 + ... + 1462946.

It is an arithmetic number, because the mean of its divisors is an integer number (15438227168).

It is a 1-persistent number, because it is pandigital, but 2⋅780645032916 = 1561290065832 is not.

Almost surely, 2^780645032916 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 780645032916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1111552356096).

780645032916 is an abundant number, since it is smaller than the sum of its proper divisors (1442459679276).

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

780645032916 is a wasteful number, since it uses less digits than its factorization.

780645032916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702190 (or 702181 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 780645032916 in words is "seven hundred eighty billion, six hundred forty-five million, thirty-two thousand, nine hundred sixteen".