13020356426 has 128 divisors (see below), whose sum is σ = 25469227008. Its totient is φ = 4847040000.

The previous prime is 13020356411. The next prime is 13020356449. The reversal of 13020356426 is 62465302031.

It is a junction number, because it is equal to n+sod(n) for n = 13020356392 and 13020356401.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 86227451 + ... + 86227601.

It is an arithmetic number, because the mean of its divisors is an integer number (198978336).

Almost surely, 2^13020356426 is an apocalyptic number.

13020356426 is a deficient number, since it is larger than the sum of its proper divisors (12448870582).

13020356426 is a wasteful number, since it uses less digits than its factorization.

13020356426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 13020356426 its reverse (62465302031), we get a palindrome (75485658457).

The spelling of 13020356426 in words is "thirteen billion, twenty million, three hundred fifty-six thousand, four hundred twenty-six".