1125721521160 has 64 divisors (see below), whose sum is σ = 2557234022400. Its totient is φ = 445960106496.

The previous prime is 1125721521151. The next prime is 1125721521191. The reversal of 1125721521160 is 611251275211.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16782649 + ... + 16849591.

It is an arithmetic number, because the mean of its divisors is an integer number (39956781600).

Almost surely, 2^{1125721521160} is an apocalyptic number.

1125721521160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125721521160 is an abundant number, since it is smaller than the sum of its proper divisors (1431512501240).

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

1125721521160 is a wasteful number, since it uses less digits than its factorization.

1125721521160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70990 (or 70986 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 34.

Adding to 1125721521160 its reverse (611251275211), we get a palindrome (1736972796371).

The spelling of 1125721521160 in words is "one trillion, one hundred twenty-five billion, seven hundred twenty-one million, five hundred twenty-one thousand, one hundred sixty".