1138643240460 has 96 divisors (see below), whose sum is σ = 3479194156032. Its totient is φ = 275942929920.

The previous prime is 1138643240453. The next prime is 1138643240521. The reversal of 1138643240460 is 640423468311.

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, 1709832 + ... + 2280528.

It is an arithmetic number, because the mean of its divisors is an integer number (36241605792).

Almost surely, 2^{1138643240460} is an apocalyptic number.

1138643240460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1138643240460 is an abundant number, since it is smaller than the sum of its proper divisors (2340550915572).

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

1138643240460 is a wasteful number, since it uses less digits than its factorization.

1138643240460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573743 (or 573741 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 1138643240460 in words is "one trillion, one hundred thirty-eight billion, six hundred forty-three million, two hundred forty thousand, four hundred sixty".