12690466911257 has 4 divisors (see below), whose sum is σ = 12690474111156. Its totient is φ = 12690459711360.

The previous prime is 12690466911203. The next prime is 12690466911263. The reversal of 12690466911257 is 75211966409621.

12690466911257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8959461751696 + 3731005159561 = 2993236^2 + 1931581^2 .

It is a cyclic number.

It is not a de Polignac number, because 12690466911257 - 2⁶ = 12690466911193 is a prime.

It is a super-2 number, since 2×12690466911257² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12690466911196 and 12690466911205.

It is not an unprimeable number, because it can be changed into a prime (12690466911457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1021757 + ... + 5140517.

It is an arithmetic number, because the mean of its divisors is an integer number (3172618527789).

Almost surely, 2^{12690466911257} is an apocalyptic number.

It is an amenable number.

12690466911257 is a deficient number, since it is larger than the sum of its proper divisors (7199899).

12690466911257 is an equidigital number, since it uses as much as digits as its factorization.

12690466911257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7199898.

The product of its (nonzero) digits is 9797760, while the sum is 59.

The spelling of 12690466911257 in words is "twelve trillion, six hundred ninety billion, four hundred sixty-six million, nine hundred eleven thousand, two hundred fifty-seven".