780258487840 has 192 divisors, whose sum is σ = 2138294495232. Its totient is φ = 266679705600.

The previous prime is 780258487829. The next prime is 780258487861. The reversal of 780258487840 is 48784852087.

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, 1219980 + ... + 1746100.

It is an arithmetic number, because the mean of its divisors is an integer number (11136950496).

Almost surely, 2^780258487840 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 780258487840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1069147247616).

780258487840 is an abundant number, since it is smaller than the sum of its proper divisors (1358036007392).

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

780258487840 is a wasteful number, since it uses less digits than its factorization.

780258487840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526203 (or 526195 counting only the distinct ones).

The product of its (nonzero) digits is 32112640, while the sum is 61.

The spelling of 780258487840 in words is "seven hundred eighty billion, two hundred fifty-eight million, four hundred eighty-seven thousand, eight hundred forty".