2113493877905 has 8 divisors (see below), whose sum is σ = 2536728988200. Its totient is φ = 1690437545856.

The previous prime is 2113493877823. The next prime is 2113493877923. The reversal of 2113493877905 is 5097783943112.

It can be written as a sum of positive squares in 4 ways, for example, as 51423725824 + 2062070152081 = 226768^2 + 1435991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2113493877905 - 2³⁶ = 2044774401169 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44668550 + ... + 44715839.

It is an arithmetic number, because the mean of its divisors is an integer number (317091123525).

Almost surely, 2^{2113493877905} is an apocalyptic number.

It is an amenable number.

2113493877905 is a deficient number, since it is larger than the sum of its proper divisors (423235110295).

2113493877905 is an equidigital number, since it uses as much as digits as its factorization.

2113493877905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89389123.

The product of its (nonzero) digits is 11430720, while the sum is 59.

The spelling of 2113493877905 in words is "two trillion, one hundred thirteen billion, four hundred ninety-three million, eight hundred seventy-seven thousand, nine hundred five".