13215141100405 has 8 divisors (see below), whose sum is σ = 15865833987000. Its totient is φ = 10567003102656.

The previous prime is 13215141100379. The next prime is 13215141100459. The reversal of 13215141100405 is 50400114151231.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1414555801201 + 11800585299204 = 1189351^2 + 3435198^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13215141100405 - 2⁷ = 13215141100277 is a prime.

It is a super-2 number, since 2×13215141100405² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638710830 + ... + 638731519.

It is an arithmetic number, because the mean of its divisors is an integer number (1983229248375).

Almost surely, 2^{13215141100405} is an apocalyptic number.

It is an amenable number.

13215141100405 is a deficient number, since it is larger than the sum of its proper divisors (2650692886595).

13215141100405 is a wasteful number, since it uses less digits than its factorization.

13215141100405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277444423.

The product of its (nonzero) digits is 2400, while the sum is 28.

Adding to 13215141100405 its reverse (50400114151231), we get a palindrome (63615255251636).

The spelling of 13215141100405 in words is "thirteen trillion, two hundred fifteen billion, one hundred forty-one million, one hundred thousand, four hundred five".