12962157065 has 24 divisors (see below), whose sum is σ = 18412372104. Its totient is φ = 8701862400.

The previous prime is 12962156993. The next prime is 12962157071. The reversal of 12962157065 is 56075126921.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 592046224 + 12370110841 = 24332^2 + 111221^2 .

It is not a de Polignac number, because 12962157065 - 2¹² = 12962152969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 816176 + ... + 831905.

It is an arithmetic number, because the mean of its divisors is an integer number (767182171).

Almost surely, 2^12962157065 is an apocalyptic number.

It is an amenable number.

12962157065 is a deficient number, since it is larger than the sum of its proper divisors (5450215039).

12962157065 is a wasteful number, since it uses less digits than its factorization.

12962157065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648121 (or 1648110 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 12962157065 in words is "twelve billion, nine hundred sixty-two million, one hundred fifty-seven thousand, sixty-five".