780855147072 has 1512 divisors, whose sum is σ = 3197915465472. Its totient is φ = 178885324800.

The previous prime is 780855147047. The next prime is 780855147077. The reversal of 780855147072 is 270741558087.

780855147072 is a `hidden beast` number, since 7 + 80 + 8 + 551 + 4 + 7 + 0 + 7 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (780855147077) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 9884242329 + ... + 9884242407.

It is an arithmetic number, because the mean of its divisors is an integer number (2115023456).

Almost surely, 2^780855147072 is an apocalyptic number.

780855147072 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 780855147072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1598957732736).

780855147072 is an abundant number, since it is smaller than the sum of its proper divisors (2417060318400).

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

780855147072 is a wasteful number, since it uses less digits than its factorization.

780855147072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 4390400, while the sum is 54.

The spelling of 780855147072 in words is "seven hundred eighty billion, eight hundred fifty-five million, one hundred forty-seven thousand, seventy-two".