12621662250026 has 16 divisors (see below), whose sum is σ = 19430019655200. Its totient is φ = 6146951660208.

The previous prime is 12621662249969. The next prime is 12621662250077. The reversal of 12621662250026 is 62005226612621.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490644200 + ... + 490669923.

It is an arithmetic number, because the mean of its divisors is an integer number (1214376228450).

Almost surely, 2^{12621662250026} is an apocalyptic number.

12621662250026 is a deficient number, since it is larger than the sum of its proper divisors (6808357405174).

12621662250026 is a wasteful number, since it uses less digits than its factorization.

12621662250026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981314293.

The product of its (nonzero) digits is 207360, while the sum is 41.

Adding to 12621662250026 its reverse (62005226612621), we get a palindrome (74626888862647).

The spelling of 12621662250026 in words is "twelve trillion, six hundred twenty-one billion, six hundred sixty-two million, two hundred fifty thousand, twenty-six".