105511553123 has 8 divisors (see below), whose sum is σ = 107012424960. Its totient is φ = 104011092360.

The previous prime is 105511553053. The next prime is 105511553129. The reversal of 105511553123 is 321355115501.

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 105511553123 - 2¹² = 105511549027 is a prime.

It is a super-2 number, since 2×105511553123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105511553123.

It is not an unprimeable number, because it can be changed into a prime (105511553129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434018 + ... + 631976.

It is an arithmetic number, because the mean of its divisors is an integer number (13376553120).

Almost surely, 2^105511553123 is an apocalyptic number.

105511553123 is a deficient number, since it is larger than the sum of its proper divisors (1500871837).

105511553123 is an equidigital number, since it uses as much as digits as its factorization.

105511553123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205537.

The product of its (nonzero) digits is 11250, while the sum is 32.

Adding to 105511553123 its reverse (321355115501), we get a palindrome (426866668624).

The spelling of 105511553123 in words is "one hundred five billion, five hundred eleven million, five hundred fifty-three thousand, one hundred twenty-three".