1113438637265 has 16 divisors (see below), whose sum is σ = 1337193473616. Its totient is φ = 890039808000.

The previous prime is 1113438637229. The next prime is 1113438637273. The reversal of 1113438637265 is 5627368343111.

It can be written as a sum of positive squares in 8 ways, for example, as 447752354449 + 665686282816 = 669143^2 + 815896^2 .

It is not a de Polignac number, because 1113438637265 - 2⁸ = 1113438637009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 33928865 + ... + 33961665.

It is an arithmetic number, because the mean of its divisors is an integer number (83574592101).

Almost surely, 2^{1113438637265} is an apocalyptic number.

It is an amenable number.

1113438637265 is a deficient number, since it is larger than the sum of its proper divisors (223754836351).

1113438637265 is a wasteful number, since it uses less digits than its factorization.

1113438637265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38020.

The product of its digits is 2177280, while the sum is 50.

The spelling of 1113438637265 in words is "one trillion, one hundred thirteen billion, four hundred thirty-eight million, six hundred thirty-seven thousand, two hundred sixty-five".