1121506553260 has 24 divisors (see below), whose sum is σ = 2390315462640. Its totient is φ = 441907059264.

The previous prime is 1121506553249. The next prime is 1121506553261. The reversal of 1121506553260 is 623556051211.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1121506553261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418471255 + ... + 418473934.

It is an arithmetic number, because the mean of its divisors is an integer number (99596477610).

Almost surely, 2^{1121506553260} is an apocalyptic number.

1121506553260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121506553260 is an abundant number, since it is smaller than the sum of its proper divisors (1268808909380).

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

1121506553260 is a wasteful number, since it uses less digits than its factorization.

1121506553260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836945265 (or 836945263 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 1121506553260 in words is "one trillion, one hundred twenty-one billion, five hundred six million, five hundred fifty-three thousand, two hundred sixty".