13018256646226 has 32 divisors (see below), whose sum is σ = 22285247569200. Its totient is φ = 5659745387520.

The previous prime is 13018256646221. The next prime is 13018256646233. The reversal of 13018256646226 is 62264665281031.

It can be written as a sum of positive squares in 8 ways, for example, as 2787847999225 + 10230408647001 = 1669685^2 + 3198501^2 .

It is a super-2 number, since 2×13018256646226² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13018256646221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210525091 + ... + 210586918.

Almost surely, 2^{13018256646226} is an apocalyptic number.

13018256646226 is a deficient number, since it is larger than the sum of its proper divisors (9266990922974).

13018256646226 is a wasteful number, since it uses less digits than its factorization.

13018256646226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421112094.

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 13018256646226 in words is "thirteen trillion, eighteen billion, two hundred fifty-six million, six hundred forty-six thousand, two hundred twenty-six".