13442556437 has 2 divisors, whose sum is σ = 13442556438. Its totient is φ = 13442556436.

The previous prime is 13442556301. The next prime is 13442556461. The reversal of 13442556437 is 73465524431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13121931601 + 320624836 = 114551^2 + 17906^2 .

It is a cyclic number.

It is not a de Polignac number, because 13442556437 - 2¹⁸ = 13442294293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13442556037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6721278218 + 6721278219.

It is an arithmetic number, because the mean of its divisors is an integer number (6721278219).

Almost surely, 2^13442556437 is an apocalyptic number.

It is an amenable number.

13442556437 is a deficient number, since it is larger than the sum of its proper divisors (1).

13442556437 is an equidigital number, since it uses as much as digits as its factorization.

13442556437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 44.

The spelling of 13442556437 in words is "thirteen billion, four hundred forty-two million, five hundred fifty-six thousand, four hundred thirty-seven".