12750140261 has 16 divisors (see below), whose sum is σ = 13251576240. Its totient is φ = 12252979200.

The previous prime is 12750140243. The next prime is 12750140269. The reversal of 12750140261 is 16204105721.

It can be written as a sum of positive squares in 8 ways, for example, as 33292900 + 12716847361 = 5770^2 + 112769^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12750140261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12750140269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7174205 + ... + 7175981.

It is an arithmetic number, because the mean of its divisors is an integer number (828223515).

Almost surely, 2^12750140261 is an apocalyptic number.

It is an amenable number.

12750140261 is a deficient number, since it is larger than the sum of its proper divisors (501435979).

12750140261 is a wasteful number, since it uses less digits than its factorization.

12750140261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824.

The product of its (nonzero) digits is 3360, while the sum is 29.

Adding to 12750140261 its reverse (16204105721), we get a palindrome (28954245982).

The spelling of 12750140261 in words is "twelve billion, seven hundred fifty million, one hundred forty thousand, two hundred sixty-one".