11233557789 has 16 divisors (see below), whose sum is σ = 15861539520. Its totient is φ = 7047440640.

The previous prime is 11233557787. The next prime is 11233557791. The reversal of 11233557789 is 98775533211.

It is an interprime number because it is at equal distance from previous prime (11233557787) and next prime (11233557791).

It is not a de Polignac number, because 11233557789 - 2¹ = 11233557787 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11233557781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451527 + ... + 475755.

It is an arithmetic number, because the mean of its divisors is an integer number (991346220).

Almost surely, 2^11233557789 is an apocalyptic number.

It is an amenable number.

11233557789 is a deficient number, since it is larger than the sum of its proper divisors (4627981731).

11233557789 is a wasteful number, since it uses less digits than its factorization.

11233557789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33340.

The product of its digits is 1587600, while the sum is 51.

The spelling of 11233557789 in words is "eleven billion, two hundred thirty-three million, five hundred fifty-seven thousand, seven hundred eighty-nine".