1178325218520 has 960 divisors, whose sum is σ = 4350608317440. Its totient is φ = 285656025600.

The previous prime is 1178325218519. The next prime is 1178325218561. The reversal of 1178325218520 is 258125238711.

1178325218520 is a `hidden beast` number, since 1 + 1 + 7 + 83 + 25 + 21 + 8 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 3559894755 + ... + 3559895085.

It is an arithmetic number, because the mean of its divisors is an integer number (4531883664).

Almost surely, 2^{1178325218520} is an apocalyptic number.

1178325218520 is a gapful number since it is divisible by the number (10) 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 1178325218520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2175304158720).

1178325218520 is an abundant number, since it is smaller than the sum of its proper divisors (3172283098920).

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

1178325218520 is a wasteful number, since it uses less digits than its factorization.

1178325218520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 45.

The spelling of 1178325218520 in words is "one trillion, one hundred seventy-eight billion, three hundred twenty-five million, two hundred eighteen thousand, five hundred twenty".