13405501445507 has 2 divisors, whose sum is σ = 13405501445508. Its totient is φ = 13405501445506.

The previous prime is 13405501445389. The next prime is 13405501445533. The reversal of 13405501445507 is 70554410550431.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13405501445507 - 2¹⁴ = 13405501429123 is a prime.

It is not a weakly prime, because it can be changed into another prime (13405501445587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6702750722753 + 6702750722754.

It is an arithmetic number, because the mean of its divisors is an integer number (6702750722754).

Almost surely, 2^{13405501445507} is an apocalyptic number.

13405501445507 is a deficient number, since it is larger than the sum of its proper divisors (1).

13405501445507 is an equidigital number, since it uses as much as digits as its factorization.

13405501445507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840000, while the sum is 44.

Adding to 13405501445507 its reverse (70554410550431), we get a palindrome (83959911995938).

The spelling of 13405501445507 in words is "thirteen trillion, four hundred five billion, five hundred one million, four hundred forty-five thousand, five hundred seven".