2065521123631 has 12 divisors (see below), whose sum is σ = 2461352700240. Its totient is φ = 1727265049440.

The previous prime is 2065521123607. The next prime is 2065521123683. The reversal of 2065521123631 is 1363211255602.

It is not a de Polignac number, because 2065521123631 - 2¹¹ = 2065521121583 is a prime.

It is a super-2 number, since 2×2065521123631² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065521123031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 514064971 + ... + 514068988.

It is an arithmetic number, because the mean of its divisors is an integer number (205112725020).

Almost surely, 2^{2065521123631} is an apocalyptic number.

2065521123631 is a deficient number, since it is larger than the sum of its proper divisors (395831576609).

2065521123631 is a wasteful number, since it uses less digits than its factorization.

2065521123631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028134014 (or 1028134007 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 2065521123631 in words is "two trillion, sixty-five billion, five hundred twenty-one million, one hundred twenty-three thousand, six hundred thirty-one".