1078188261867 has 12 divisors (see below), whose sum is σ = 1557996462360. Its totient is φ = 718509058848.

The previous prime is 1078188261853. The next prime is 1078188261923. The reversal of 1078188261867 is 7681628818701.

1078188261867 is a `hidden beast` number, since 1 + 0 + 7 + 8 + 1 + 8 + 8 + 2 + 618 + 6 + 7 = 666.

1078188261867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1078188261867 - 2⁴ = 1078188261851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1078188261817) 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, 23568858 + ... + 23614559.

It is an arithmetic number, because the mean of its divisors is an integer number (129833038530).

Almost surely, 2^{1078188261867} is an apocalyptic number.

1078188261867 is a deficient number, since it is larger than the sum of its proper divisors (479808200493).

1078188261867 is a wasteful number, since it uses less digits than its factorization.

1078188261867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47185962 (or 47185959 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 63.

The spelling of 1078188261867 in words is "one trillion, seventy-eight billion, one hundred eighty-eight million, two hundred sixty-one thousand, eight hundred sixty-seven".