1178788448520 has 48 divisors (see below), whose sum is σ = 3831062458860. Its totient is φ = 314343586176.

The previous prime is 1178788448471. The next prime is 1178788448521. The reversal of 1178788448520 is 258448878711.

1178788448520 is a `hidden beast` number, since 1 + 1 + 7 + 8 + 78 + 84 + 485 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1145512121796 + 33276326724 = 1070286^2 + 182418^2 .

It is not an unprimeable number, because it can be changed into a prime (1178788448521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1637205819 + ... + 1637206538.

Almost surely, 2^{1178788448520} is an apocalyptic number.

1178788448520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1178788448520 is an abundant number, since it is smaller than the sum of its proper divisors (2652274010340).

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

1178788448520 is a wasteful number, since it uses less digits than its factorization.

1178788448520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274412374 (or 3274412367 counting only the distinct ones).

The product of its (nonzero) digits is 32112640, while the sum is 63.

The spelling of 1178788448520 in words is "one trillion, one hundred seventy-eight billion, seven hundred eighty-eight million, four hundred forty-eight thousand, five hundred twenty".