13366260405 has 12 divisors (see below), whose sum is σ = 23168184780. Its totient is φ = 7128672192.

The previous prime is 13366260379. The next prime is 13366260437. The reversal of 13366260405 is 50406266331.

13366260405 is a `hidden beast` number, since 13 + 36 + 6 + 2 + 604 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3766767876 + 9599492529 = 61374^2 + 97977^2 .

It is not a de Polignac number, because 13366260405 - 2¹⁰ = 13366259381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13366260405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148513960 + ... + 148514049.

It is an arithmetic number, because the mean of its divisors is an integer number (1930682065).

Almost surely, 2^13366260405 is an apocalyptic number.

13366260405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13366260405 is a deficient number, since it is larger than the sum of its proper divisors (9801924375).

13366260405 is a wasteful number, since it uses less digits than its factorization.

13366260405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297028020 (or 297028017 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 13366260405 in words is "thirteen billion, three hundred sixty-six million, two hundred sixty thousand, four hundred five".