105530531511 has 4 divisors (see below), whose sum is σ = 140707375352. Its totient is φ = 70353687672.

The previous prime is 105530531507. The next prime is 105530531531. The reversal of 105530531511 is 115135035501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115135035501 = 3 ⋅38378345167.

It is not a de Polignac number, because 105530531511 - 2² = 105530531507 is a prime.

It is a super-2 number, since 2×105530531511² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105530531531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17588421916 + ... + 17588421921.

It is an arithmetic number, because the mean of its divisors is an integer number (35176843838).

Almost surely, 2^105530531511 is an apocalyptic number.

105530531511 is a deficient number, since it is larger than the sum of its proper divisors (35176843841).

105530531511 is an equidigital number, since it uses as much as digits as its factorization.

105530531511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35176843840.

The product of its (nonzero) digits is 5625, while the sum is 30.

The spelling of 105530531511 in words is "one hundred five billion, five hundred thirty million, five hundred thirty-one thousand, five hundred eleven".