13504541437 has 2 divisors, whose sum is σ = 13504541438. Its totient is φ = 13504541436.

The previous prime is 13504541387. The next prime is 13504541497. The reversal of 13504541437 is 73414540531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12044843001 + 1459698436 = 109749^2 + 38206^2 .

It is an emirp because it is prime and its reverse (73414540531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13504541437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13504541396 and 13504541405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13504541497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6752270718 + 6752270719.

It is an arithmetic number, because the mean of its divisors is an integer number (6752270719).

Almost surely, 2^13504541437 is an apocalyptic number.

It is an amenable number.

13504541437 is a deficient number, since it is larger than the sum of its proper divisors (1).

13504541437 is an equidigital number, since it uses as much as digits as its factorization.

13504541437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 13504541437 in words is "thirteen billion, five hundred four million, five hundred forty-one thousand, four hundred thirty-seven".