1126655563 has 16 divisors (see below), whose sum is σ = 1260328320. Its totient is φ = 1006802280.

The previous prime is 1126655557. The next prime is 1126655581. The reversal of 1126655563 is 3655566211.

It is a de Polignac number, because none of the positive numbers 2^k-1126655563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1126655533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71356 + ... + 85702.

It is an arithmetic number, because the mean of its divisors is an integer number (78770520).

Almost surely, 2^1126655563 is an apocalyptic number.

1126655563 is a deficient number, since it is larger than the sum of its proper divisors (133672757).

1126655563 is an equidigital number, since it uses as much as digits as its factorization.

1126655563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14439 (or 14417 counting only the distinct ones).

The product of its digits is 162000, while the sum is 40.

The square root of 1126655563 is about 33565.6902655077. The cubic root of 1126655563 is about 1040.5518407002.

The spelling of 1126655563 in words is "one billion, one hundred twenty-six million, six hundred fifty-five thousand, five hundred sixty-three".