1123108820406 has 128 divisors (see below), whose sum is σ = 2527751784960. Its totient is φ = 369616576896.

The previous prime is 1123108820401. The next prime is 1123108820441. The reversal of 1123108820406 is 6040288013211.

1123108820406 is a `hidden beast` number, since 1 + 123 + 108 + 8 + 20 + 406 = 666.

It is a super-2 number, since 2×1123108820406² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123108820401) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 1358051365 + ... + 1358052191.

It is an arithmetic number, because the mean of its divisors is an integer number (19748060820).

Almost surely, 2^{1123108820406} is an apocalyptic number.

1123108820406 is an abundant number, since it is smaller than the sum of its proper divisors (1404642964554).

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

1123108820406 is a wasteful number, since it uses less digits than its factorization.

1123108820406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835 (or 1829 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 1123108820406 in words is "one trillion, one hundred twenty-three billion, one hundred eight million, eight hundred twenty thousand, four hundred six".