111255919489 has 40 divisors (see below), whose sum is σ = 132143457600. Its totient is φ = 93114843360.

The previous prime is 111255919487. The next prime is 111255919559. The reversal of 111255919489 is 984919552111.

It is not a de Polignac number, because 111255919489 - 2¹ = 111255919487 is a prime.

It is a super-2 number, since 2×111255919489² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111255919487) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 125429004 + ... + 125429890.

It is an arithmetic number, because the mean of its divisors is an integer number (3303586440).

Almost surely, 2^111255919489 is an apocalyptic number.

It is an amenable number.

111255919489 is a deficient number, since it is larger than the sum of its proper divisors (20887538111).

111255919489 is an frugal number, since it uses more digits than its factorization.

111255919489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603 (or 1570 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 55.

The spelling of 111255919489 in words is "one hundred eleven billion, two hundred fifty-five million, nine hundred nineteen thousand, four hundred eighty-nine".