13550043601 has 2 divisors, whose sum is σ = 13550043602. Its totient is φ = 13550043600.

The previous prime is 13550043509. The next prime is 13550043649. The reversal of 13550043601 is 10634005531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12955902976 + 594140625 = 113824^2 + 24375^2 .

It is a cyclic number.

It is not a de Polignac number, because 13550043601 - 2¹³ = 13550035409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13550043601.

It is not a weakly prime, because it can be changed into another prime (13550043671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6775021800 + 6775021801.

It is an arithmetic number, because the mean of its divisors is an integer number (6775021801).

Almost surely, 2^13550043601 is an apocalyptic number.

It is an amenable number.

13550043601 is a deficient number, since it is larger than the sum of its proper divisors (1).

13550043601 is an equidigital number, since it uses as much as digits as its factorization.

13550043601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

It can be divided in two parts, 135500 and 43601, that added together give a triangular number (179101 = T₅₉₈).

The spelling of 13550043601 in words is "thirteen billion, five hundred fifty million, forty-three thousand, six hundred one".