105515531513 has 16 divisors (see below), whose sum is σ = 131030691840. Its totient is φ = 82917853200.

The previous prime is 105515531503. The next prime is 105515531519. The reversal of 105515531513 is 315135515501.

It is not a de Polignac number, because 105515531513 - 2¹² = 105515527417 is a prime.

It is a super-2 number, since 2×105515531513² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (105515531519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12791843 + ... + 12800088.

It is an arithmetic number, because the mean of its divisors is an integer number (8189418240).

Almost surely, 2^105515531513 is an apocalyptic number.

It is an amenable number.

105515531513 is a deficient number, since it is larger than the sum of its proper divisors (25515160327).

105515531513 is a wasteful number, since it uses less digits than its factorization.

105515531513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25591988.

The product of its (nonzero) digits is 28125, while the sum is 35.

The spelling of 105515531513 in words is "one hundred five billion, five hundred fifteen million, five hundred thirty-one thousand, five hundred thirteen".