2065431162551 has 4 divisors (see below), whose sum is σ = 2066292120000. Its totient is φ = 2064570205104.

The previous prime is 2065431162547. The next prime is 2065431162589. The reversal of 2065431162551 is 1552611345602.

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

It is a cyclic number.

It is not a de Polignac number, because 2065431162551 - 2² = 2065431162547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2065431162499 and 2065431162508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065431162541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430475126 + ... + 430479923.

It is an arithmetic number, because the mean of its divisors is an integer number (516573030000).

Almost surely, 2^{2065431162551} is an apocalyptic number.

2065431162551 is a deficient number, since it is larger than the sum of its proper divisors (860957449).

2065431162551 is an equidigital number, since it uses as much as digits as its factorization.

2065431162551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860957448.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 2065431162551 in words is "two trillion, sixty-five billion, four hundred thirty-one million, one hundred sixty-two thousand, five hundred fifty-one".