13155406426 has 4 divisors (see below), whose sum is σ = 19733109642. Its totient is φ = 6577703212.

The previous prime is 13155406421. The next prime is 13155406427. The reversal of 13155406426 is 62460455131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62460455131 = 6397 ⋅9764023.

It can be written as a sum of positive squares in only one way, i.e., 12862962225 + 292444201 = 113415^2 + 17101^2 .

It is not an unprimeable number, because it can be changed into a prime (13155406421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3288851605 + ... + 3288851608.

Almost surely, 2^13155406426 is an apocalyptic number.

13155406426 is a deficient number, since it is larger than the sum of its proper divisors (6577703216).

13155406426 is an equidigital number, since it uses as much as digits as its factorization.

13155406426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6577703215.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 13155406426 in words is "thirteen billion, one hundred fifty-five million, four hundred six thousand, four hundred twenty-six".