2065138377121 has 8 divisors (see below), whose sum is σ = 2120987056680. Its totient is φ = 2009291493888.

The previous prime is 2065138377109. The next prime is 2065138377131. The reversal of 2065138377121 is 1217738315602.

It can be written as a sum of positive squares in 4 ways, for example, as 583793796096 + 1481344581025 = 764064^2 + 1217105^2 .

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 2065138377121 - 2¹³ = 2065138368929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2065138377131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2069775 + ... + 2900731.

It is an arithmetic number, because the mean of its divisors is an integer number (265123382085).

Almost surely, 2^{2065138377121} is an apocalyptic number.

It is an amenable number.

2065138377121 is a deficient number, since it is larger than the sum of its proper divisors (55848679559).

2065138377121 is an equidigital number, since it uses as much as digits as its factorization.

2065138377121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898163.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 2065138377121 in words is "two trillion, sixty-five billion, one hundred thirty-eight million, three hundred seventy-seven thousand, one hundred twenty-one".