12750617520257 has 8 divisors (see below), whose sum is σ = 13502866813992. Its totient is φ = 11998614112000.

The previous prime is 12750617520253. The next prime is 12750617520271. The reversal of 12750617520257 is 75202571605721.

It can be written as a sum of positive squares in 4 ways, for example, as 1521845444161 + 11228772076096 = 1233631^2 + 3350936^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12750617520257 - 2² = 12750617520253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12750617520253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61364594 + ... + 61572027.

It is an arithmetic number, because the mean of its divisors is an integer number (1687858351749).

Almost surely, 2^{12750617520257} is an apocalyptic number.

12750617520257 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12750617520257 is a deficient number, since it is larger than the sum of its proper divisors (752249293735).

12750617520257 is a wasteful number, since it uses less digits than its factorization.

12750617520257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122942739.

The product of its (nonzero) digits is 2058000, while the sum is 50.

The spelling of 12750617520257 in words is "twelve trillion, seven hundred fifty billion, six hundred seventeen million, five hundred twenty thousand, two hundred fifty-seven".