13609790831026 has 16 divisors (see below), whose sum is σ = 22112127929304. Its totient is φ = 6245133007104.

The previous prime is 13609790831023. The next prime is 13609790831041. The reversal of 13609790831026 is 62013809790631.

It is a Cunningham number, because it is equal to 3689145²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 12380187065401 + 1229603765625 = 3518549^2 + 1108875^2 .

It is a super-3 number, since 3×13609790831026³ (a number of 40 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (13609790831023) 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, 1512866871 + ... + 1512875866.

Almost surely, 2^{13609790831026} is an apocalyptic number.

13609790831026 is a deficient number, since it is larger than the sum of its proper divisors (8502337098278).

13609790831026 is a wasteful number, since it uses less digits than its factorization.

13609790831026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025742925.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The spelling of 13609790831026 in words is "thirteen trillion, six hundred nine billion, seven hundred ninety million, eight hundred thirty-one thousand, twenty-six".