1125781135900 has 18 divisors (see below), whose sum is σ = 2442945065120. Its totient is φ = 450312454320.

The previous prime is 1125781135891. The next prime is 1125781135979. The reversal of 1125781135900 is 95311875211.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5628905580 + ... + 5628905779.

Almost surely, 2^{1125781135900} is an apocalyptic number.

1125781135900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125781135900 is an abundant number, since it is smaller than the sum of its proper divisors (1317163929220).

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

1125781135900 is a wasteful number, since it uses less digits than its factorization.

1125781135900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11257811373 (or 11257811366 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 43.

The spelling of 1125781135900 in words is "one trillion, one hundred twenty-five billion, seven hundred eighty-one million, one hundred thirty-five thousand, nine hundred".