1123797078135 has 32 divisors (see below), whose sum is σ = 2001089184000. Its totient is φ = 598390128288.

The previous prime is 1123797078113. The next prime is 1123797078191. The reversal of 1123797078135 is 5318707973211.

1123797078135 is a `hidden beast` number, since 1 + 1 + 2 + 379 + 70 + 78 + 135 = 666.

It is not a de Polignac number, because 1123797078135 - 2²⁷ = 1123662860407 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6640525 + ... + 6807654.

It is an arithmetic number, because the mean of its divisors is an integer number (62534037000).

Almost surely, 2^{1123797078135} is an apocalyptic number.

1123797078135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1123797078135 is a deficient number, since it is larger than the sum of its proper divisors (877292105865).

1123797078135 is a wasteful number, since it uses less digits than its factorization.

1123797078135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13448812 (or 13448806 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 54.

The spelling of 1123797078135 in words is "one trillion, one hundred twenty-three billion, seven hundred ninety-seven million, seventy-eight thousand, one hundred thirty-five".