1113544320405 has 32 divisors (see below), whose sum is σ = 1958945292288. Its totient is φ = 535649083200.

The previous prime is 1113544320397. The next prime is 1113544320407. The reversal of 1113544320405 is 5040234453111.

It is not a de Polignac number, because 1113544320405 - 2³ = 1113544320397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113544320407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26548941 + ... + 26590850.

It is an arithmetic number, because the mean of its divisors is an integer number (61217040384).

Almost surely, 2^{1113544320405} is an apocalyptic number.

1113544320405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1113544320405 is a deficient number, since it is larger than the sum of its proper divisors (845400971883).

1113544320405 is a wasteful number, since it uses less digits than its factorization.

1113544320405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53139937.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 1113544320405 its reverse (5040234453111), we get a palindrome (6153778773516).

The spelling of 1113544320405 in words is "one trillion, one hundred thirteen billion, five hundred forty-four million, three hundred twenty thousand, four hundred five".