780337428480 has 384 divisors, whose sum is σ = 2798515137600. Its totient is φ = 206240219136.

The previous prime is 780337428469. The next prime is 780337428499. The reversal of 780337428480 is 84824733087.

780337428480 is a `hidden beast` number, since 78 + 0 + 3 + 3 + 74 + 28 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×780337428480² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 31 ways as a sum of consecutive naturals, for example, 31229752 + ... + 31254728.

Almost surely, 2^780337428480 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 780337428480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1399257568800).

780337428480 is an abundant number, since it is smaller than the sum of its proper divisors (2018177709120).

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

780337428480 is a wasteful number, since it uses less digits than its factorization.

780337428480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25126 (or 25100 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 54.

The spelling of 780337428480 in words is "seven hundred eighty billion, three hundred thirty-seven million, four hundred twenty-eight thousand, four hundred eighty".