13156442426 has 32 divisors (see below), whose sum is σ = 21208666752. Its totient is φ = 6098641920.

The previous prime is 13156442423. The next prime is 13156442459. The reversal of 13156442426 is 62424465131.

It is a self number, because there is not a number n which added to its sum of digits gives 13156442426.

It is not an unprimeable number, because it can be changed into a prime (13156442423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4288145 + ... + 4291211.

It is an arithmetic number, because the mean of its divisors is an integer number (662770836).

Almost surely, 2^13156442426 is an apocalyptic number.

13156442426 is a deficient number, since it is larger than the sum of its proper divisors (8052224326).

13156442426 is a wasteful number, since it uses less digits than its factorization.

13156442426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4934.

The product of its digits is 138240, while the sum is 38.

The spelling of 13156442426 in words is "thirteen billion, one hundred fifty-six million, four hundred forty-two thousand, four hundred twenty-six".