2113623440065 has 8 divisors (see below), whose sum is σ = 2536393115880. Its totient is φ = 1690868760192.

The previous prime is 2113623440059. The next prime is 2113623440099. The reversal of 2113623440065 is 5600443263112.

It can be written as a sum of positive squares in 4 ways, for example, as 40000400001 + 2073623040064 = 200001^2 + 1440008^2 .

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 2113623440065 - 2⁷ = 2113623439937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3436534 + ... + 4004623.

It is an arithmetic number, because the mean of its divisors is an integer number (317049139485).

Almost surely, 2^{2113623440065} is an apocalyptic number.

It is an amenable number.

2113623440065 is a deficient number, since it is larger than the sum of its proper divisors (422769675815).

2113623440065 is an equidigital number, since it uses as much as digits as its factorization.

2113623440065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7497971.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 2113623440065 in words is "two trillion, one hundred thirteen billion, six hundred twenty-three million, four hundred forty thousand, sixty-five".