1123378047156 has 48 divisors (see below), whose sum is σ = 2702158603200. Its totient is φ = 363069925632.

The previous prime is 1123378047139. The next prime is 1123378047361. The reversal of 1123378047156 is 6517408733211.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10816071 + ... + 10919438.

It is an arithmetic number, because the mean of its divisors is an integer number (56294970900).

Almost surely, 2^{1123378047156} is an apocalyptic number.

It is an amenable number.

1123378047156 is an abundant number, since it is smaller than the sum of its proper divisors (1578780556044).

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

1123378047156 is a wasteful number, since it uses less digits than its factorization.

1123378047156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21735648 (or 21735646 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 1123378047156 in words is "one trillion, one hundred twenty-three billion, three hundred seventy-eight million, forty-seven thousand, one hundred fifty-six".