1123356781368 has 48 divisors (see below), whose sum is σ = 3140567352000. Its totient is φ = 362373154560.

The previous prime is 1123356781331. The next prime is 1123356781369. The reversal of 1123356781368 is 8631876533211.

1123356781368 is a `hidden beast` number, since 1 + 1 + 2 + 3 + 3 + 567 + 8 + 13 + 68 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123356781369) 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, 251645793 + ... + 251650256.

It is an arithmetic number, because the mean of its divisors is an integer number (65428486500).

Almost surely, 2^{1123356781368} is an apocalyptic number.

1123356781368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1123356781368 is an abundant number, since it is smaller than the sum of its proper divisors (2017210570632).

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

1123356781368 is a wasteful number, since it uses less digits than its factorization.

1123356781368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503296092 (or 503296085 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 1123356781368 in words is "one trillion, one hundred twenty-three billion, three hundred fifty-six million, seven hundred eighty-one thousand, three hundred sixty-eight".