2113511637593 has 4 divisors (see below), whose sum is σ = 2135300417460. Its totient is φ = 2091722857728.

The previous prime is 2113511637583. The next prime is 2113511637599. The reversal of 2113511637593 is 3957361153112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 948068321344 + 1165443316249 = 973688^2 + 1079557^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113511637593 - 2¹⁸ = 2113511375449 is a prime.

It is a super-3 number, since 3×2113511637593³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2113511637599) 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 3 ways as a sum of consecutive naturals, for example, 10894389788 + ... + 10894389981.

It is an arithmetic number, because the mean of its divisors is an integer number (533825104365).

Almost surely, 2^{2113511637593} is an apocalyptic number.

It is an amenable number.

2113511637593 is a deficient number, since it is larger than the sum of its proper divisors (21788779867).

2113511637593 is an equidigital number, since it uses as much as digits as its factorization.

2113511637593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21788779866.

The product of its digits is 510300, while the sum is 47.

The spelling of 2113511637593 in words is "two trillion, one hundred thirteen billion, five hundred eleven million, six hundred thirty-seven thousand, five hundred ninety-three".