1125398703912 has 128 divisors (see below), whose sum is σ = 3283058688000. Its totient is φ = 321345226944.

The previous prime is 1125398703893. The next prime is 1125398703973. The reversal of 1125398703912 is 2193078935211.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13648713 + ... + 13730919.

It is an arithmetic number, because the mean of its divisors is an integer number (25648896000).

Almost surely, 2^{1125398703912} is an apocalyptic number.

1125398703912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125398703912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1641529344000).

1125398703912 is an abundant number, since it is smaller than the sum of its proper divisors (2157659984088).

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

1125398703912 is a wasteful number, since it uses less digits than its factorization.

1125398703912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83900 (or 83882 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 51.

The spelling of 1125398703912 in words is "one trillion, one hundred twenty-five billion, three hundred ninety-eight million, seven hundred three thousand, nine hundred twelve".