13561341011215 has 32 divisors (see below), whose sum is σ = 16872348874752. Its totient is φ = 10453074192000.

The previous prime is 13561341011203. The next prime is 13561341011237. The reversal of 13561341011215 is 51211014316531.

It is a happy number.

It is not a de Polignac number, because 13561341011215 - 2⁷ = 13561341011087 is a prime.

It is a super-3 number, since 3×13561341011215³ (a number of 40 digits) contains 333 as substring.

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 31 ways as a sum of consecutive naturals, for example, 37426260 + ... + 37786870.

It is an arithmetic number, because the mean of its divisors is an integer number (527260902336).

Almost surely, 2^{13561341011215} is an apocalyptic number.

13561341011215 is a deficient number, since it is larger than the sum of its proper divisors (3311007863537).

13561341011215 is a wasteful number, since it uses less digits than its factorization.

13561341011215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361711.

The product of its (nonzero) digits is 10800, while the sum is 34.

Adding to 13561341011215 its reverse (51211014316531), we get a palindrome (64772355327746).

The spelling of 13561341011215 in words is "thirteen trillion, five hundred sixty-one billion, three hundred forty-one million, eleven thousand, two hundred fifteen".