13671002605 has 24 divisors (see below), whose sum is σ = 17935148952. Its totient is φ = 9944618112.

The previous prime is 13671002563. The next prime is 13671002621. The reversal of 13671002605 is 50620017631.

It can be written as a sum of positive squares in 4 ways, for example, as 33200644 + 13637801961 = 5762^2 + 116781^2 .

It is not a de Polignac number, because 13671002605 - 2¹¹ = 13671000557 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 23 ways as a sum of consecutive naturals, for example, 268359 + ... + 315211.

It is an arithmetic number, because the mean of its divisors is an integer number (747297873).

Almost surely, 2^13671002605 is an apocalyptic number.

It is an amenable number.

13671002605 is a deficient number, since it is larger than the sum of its proper divisors (4264146347).

13671002605 is an equidigital number, since it uses as much as digits as its factorization.

13671002605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47005 (or 46938 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The spelling of 13671002605 in words is "thirteen billion, six hundred seventy-one million, two thousand, six hundred five".