1126556721488 has 60 divisors (see below), whose sum is σ = 2432035774644. Its totient is φ = 505056499200.

The previous prime is 1126556721481. The next prime is 1126556721553. The reversal of 1126556721488 is 8841276556211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 799221696064 + 327335025424 = 893992^2 + 572132^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1126556721481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3844283 + ... + 4126938.

Almost surely, 2^{1126556721488} is an apocalyptic number.

It is an amenable number.

1126556721488 is an abundant number, since it is smaller than the sum of its proper divisors (1305479053156).

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

1126556721488 is a wasteful number, since it uses less digits than its factorization.

1126556721488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7971324 (or 7971307 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 56.

The spelling of 1126556721488 in words is "one trillion, one hundred twenty-six billion, five hundred fifty-six million, seven hundred twenty-one thousand, four hundred eighty-eight".