2120311061465 has 24 divisors (see below), whose sum is σ = 2743406190144. Its totient is φ = 1570160143200.

The previous prime is 2120311061413. The next prime is 2120311061507. The reversal of 2120311061465 is 5641601130212.

It is not a de Polignac number, because 2120311061465 - 2²⁰ = 2120310012889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9482351 + ... + 9703380.

It is an arithmetic number, because the mean of its divisors is an integer number (114308591256).

Almost surely, 2^{2120311061465} is an apocalyptic number.

It is an amenable number.

2120311061465 is a deficient number, since it is larger than the sum of its proper divisors (623095128679).

2120311061465 is a wasteful number, since it uses less digits than its factorization.

2120311061465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19185821 (or 19185790 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 2120311061465 its reverse (5641601130212), we get a palindrome (7761912191677).

The spelling of 2120311061465 in words is "two trillion, one hundred twenty billion, three hundred eleven million, sixty-one thousand, four hundred sixty-five".