13480661246405 has 4 divisors (see below), whose sum is σ = 16176793495692. Its totient is φ = 10784528997120.

The previous prime is 13480661246363. The next prime is 13480661246449. The reversal of 13480661246405 is 50464216608431.

It is a Cunningham number, because it is equal to 3671602²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4853041573444 + 8627619672961 = 2202962^2 + 2937281^2 .

It is not a de Polignac number, because 13480661246405 - 2¹⁶ = 13480661180869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1348066124636 + ... + 1348066124645.

It is an arithmetic number, because the mean of its divisors is an integer number (4044198373923).

Almost surely, 2^{13480661246405} is an apocalyptic number.

It is an amenable number.

13480661246405 is a deficient number, since it is larger than the sum of its proper divisors (2696132249287).

13480661246405 is an equidigital number, since it uses as much as digits as its factorization.

13480661246405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696132249286.

The product of its (nonzero) digits is 3317760, while the sum is 50.

The spelling of 13480661246405 in words is "thirteen trillion, four hundred eighty billion, six hundred sixty-one million, two hundred forty-six thousand, four hundred five".