1268108553 has 16 divisors (see below), whose sum is σ = 1715886080. Its totient is φ = 832914576.

The previous prime is 1268108539. The next prime is 1268108561. The reversal of 1268108553 is 3558018621.

It is not a de Polignac number, because 1268108553 - 2⁵ = 1268108521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1268108573) 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, 109926 + ... + 120912.

It is an arithmetic number, because the mean of its divisors is an integer number (107242880).

Almost surely, 2^1268108553 is an apocalyptic number.

It is an amenable number.

1268108553 is a deficient number, since it is larger than the sum of its proper divisors (447777527).

1268108553 is a wasteful number, since it uses less digits than its factorization.

1268108553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11556.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 1268108553 is about 35610.5118328844. The cubic root of 1268108553 is about 1082.3942518755.

The spelling of 1268108553 in words is "one billion, two hundred sixty-eight million, one hundred eight thousand, five hundred fifty-three".