1113445578889 has 64 divisors (see below), whose sum is σ = 1400279040000. Its totient is φ = 882405437760.

The previous prime is 1113445578851. The next prime is 1113445578911. The reversal of 1113445578889 is 9888755443111.

It is not a de Polignac number, because 1113445578889 - 2¹⁷ = 1113445447817 is a prime.

It is a super-2 number, since 2×1113445578889² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1113445578889.

It is not an unprimeable number, because it can be changed into a prime (1113445578689) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 261431442 + ... + 261435700.

It is an arithmetic number, because the mean of its divisors is an integer number (21879360000).

Almost surely, 2^{1113445578889} is an apocalyptic number.

It is an amenable number.

1113445578889 is a deficient number, since it is larger than the sum of its proper divisors (286833461111).

1113445578889 is a wasteful number, since it uses less digits than its factorization.

1113445578889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5403 (or 5389 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 64.

The spelling of 1113445578889 in words is "one trillion, one hundred thirteen billion, four hundred forty-five million, five hundred seventy-eight thousand, eight hundred eighty-nine".