1129810238550 has 144 divisors (see below), whose sum is σ = 3597539242752. Its totient is φ = 258242320800.

The previous prime is 1129810238533. The next prime is 1129810238657. The reversal of 1129810238550 is 558320189211.

1129810238550 is a `hidden beast` number, since 1 + 1 + 2 + 98 + 1 + 0 + 2 + 3 + 8 + 550 = 666.

It is a super-2 number, since 2×1129810238550² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1129810238496 and 1129810238505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6556986 + ... + 6727085.

It is an arithmetic number, because the mean of its divisors is an integer number (24982911408).

Almost surely, 2^{1129810238550} is an apocalyptic number.

1129810238550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1129810238550 is an abundant number, since it is smaller than the sum of its proper divisors (2467729004202).

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

1129810238550 is a wasteful number, since it uses less digits than its factorization.

1129810238550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13284105 (or 13284088 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The spelling of 1129810238550 in words is "one trillion, one hundred twenty-nine billion, eight hundred ten million, two hundred thirty-eight thousand, five hundred fifty".