1178678785740 has 96 divisors (see below), whose sum is σ = 3614933810880. Its totient is φ = 285624385536.

The previous prime is 1178678785717. The next prime is 1178678785799. The reversal of 1178678785740 is 475878768711.

It is a hoax number, since the sum of its digits (69) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19893997 + ... + 19953156.

It is an arithmetic number, because the mean of its divisors is an integer number (37655560530).

Almost surely, 2^{1178678785740} is an apocalyptic number.

1178678785740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1178678785740 is an abundant number, since it is smaller than the sum of its proper divisors (2436255025140).

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

1178678785740 is a wasteful number, since it uses less digits than its factorization.

1178678785740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39847211 (or 39847209 counting only the distinct ones).

The product of its (nonzero) digits is 147517440, while the sum is 69.

The spelling of 1178678785740 in words is "one trillion, one hundred seventy-eight billion, six hundred seventy-eight million, seven hundred eighty-five thousand, seven hundred forty".