1123781380236 has 72 divisors (see below), whose sum is σ = 2857224340880. Its totient is φ = 372413251584.

The previous prime is 1123781380201. The next prime is 1123781380247. The reversal of 1123781380236 is 6320831873211.

1123781380236 is a `hidden beast` number, since 1 + 1 + 2 + 37 + 8 + 1 + 380 + 236 = 666.

It is a super-2 number, since 2×1123781380236² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123781380191 and 1123781380200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10919676 + ... + 11022108.

Almost surely, 2^{1123781380236} is an apocalyptic number.

It is an amenable number.

1123781380236 is an abundant number, since it is smaller than the sum of its proper divisors (1733442960644).

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

1123781380236 is a wasteful number, since it uses less digits than its factorization.

1123781380236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104215 (or 104210 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 1123781380236 in words is "one trillion, one hundred twenty-three billion, seven hundred eighty-one million, three hundred eighty thousand, two hundred thirty-six".