1123406856826 has 8 divisors (see below), whose sum is σ = 1685115862164. Its totient is φ = 561701569440.

The previous prime is 1123406856823. The next prime is 1123406856827. The reversal of 1123406856826 is 6286586043211.

It can be written as a sum of positive squares in 2 ways, for example, as 1112402637025 + 11004219801 = 1054705^2 + 104901^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1123406856823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19816 + ... + 1499068.

Almost surely, 2^{1123406856826} is an apocalyptic number.

1123406856826 is a deficient number, since it is larger than the sum of its proper divisors (561709005338).

1123406856826 is a wasteful number, since it uses less digits than its factorization.

1123406856826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858976.

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 1123406856826 in words is "one trillion, one hundred twenty-three billion, four hundred six million, eight hundred fifty-six thousand, eight hundred twenty-six".